Studio Matrx Monthly · Volume 1 · Issue 3 · August 2026
Amogh N P
 In loving memory of Amogh N P — Architect · Designer · Visionary 
Architectural Vocabulary for AILesson 1.2
GAI for Architecture, Planning & Urban Design/Module 1 · Prompt Engineering for Design

Lesson 1.2 · Prompt Engineering for Design

Architectural Vocabulary for AI

The words that actually move the model - and building your own

13 min Interactive lessonFree · open lessonByAmogh N P· Architect & interior designer
The hook

The model has a vocabulary. Yours has to overlap with it.

A word only steers the image if the training data used it consistently - if thousands of captioned pictures agreed on what it looks like. 'Brutalist' works because the internet agreed; 'beautiful' fails because it was pinned to everything and therefore nothing. This lesson is a field guide to the terms that carry real weight - movements, styles, materials, light, render words - and how to grow your own reliable palette.

Named things, not nice things. Write down every winner.

Named things beat nice things

The single rule under this whole lesson: the model responds to words that name a bounded, learnable cluster, and ignores words that don't. 'Travertine' names one stone with a consistent look across millions of captions, so it lands hard. 'Beautiful', 'modern', 'stylish', 'high-quality' were attached to every kind of image imaginable, so they average out to a faint, directionless nudge.

This is why prompts full of praise underperform prompts full of nouns. When you catch yourself reaching for an adjective of taste, stop and ask: is there a named thing I mean instead? 'A beautiful facade' becomes 'a board-formed concrete facade with deep reveals'. 'A cozy room' becomes 'a room with warm oak floors, lime plaster and low tungsten lighting'. You are trading praise the model can't act on for specifics it can.

Think of it as the difference between an adjective of judgement and an adjective of fact. 'Elegant', 'striking', 'premium', 'tasteful' are judgements - they describe your reaction to a thing, not the thing, and the model has no shared definition to act on because the training data attached them to everything from watches to wallpaper. 'Fluted', 'cantilevered', 'lime-washed', 'north-facing' are facts - they describe the thing itself, and the model learned a consistent look for each. The whole move of this lesson is learning to hear the difference in your own drafts and swap judgement for fact every time.

The corollary is liberating: you don't need flowery language at all. A design prompt reads more like a materials schedule than a poem, and that is exactly why architects and designers - who already think in named systems - have an edge here.

WEAK WORDS vs STRONG WORDS LOW SIGNAL -- the model averages, you get mush beautiful modern nice stylish aesthetic HIGH SIGNAL -- named, bounded, learnable regions brutalist travertine golden hour tilt-shift A word only steers if the training data used it consistently. Adjectives of taste ('beautiful') were pinned to no particular look, so they move almost nothing. Trade praise for precision.
Zoom
Weak words versus strong words. Taste-adjectives ('beautiful', 'modern') were pinned to everything, so they steer almost nothing; named things ('brutalist', 'travertine', 'golden hour') name a bounded cluster the model can actually turn toward.

Trade praise for precision. Nouns steer; taste-adjectives drift.

The families of vocabulary

It helps to keep a mental map of the families of terms, because each fills a different slot from Lesson 1.1.

Movements and periods are among the strongest steers: 'brutalist', 'art deco', 'bauhaus', 'metabolist', 'deconstructivist', 'Palladian', 'high-tech'. They carry whole grammars of form. Named styles and idioms are gentler but precise: 'Japandi', 'wabi-sabi', 'mid-century modern', 'Kerala vernacular', 'Mediterranean', 'industrial loft'. Materials are reliably powerful because they are concrete: 'travertine', 'laterite', 'board-formed concrete', 'Corten steel', 'terrazzo', 'burnished brass', 'lime plaster', 'teak'.

Light terms borrow from photography and set mood: 'golden hour', 'overcast', 'raking light', 'chiaroscuro', 'backlit', 'soft north light'. Medium and render words decide the picture's whole nature: 'architectural photograph', 'axonometric', 'watercolour', 'gouache', 'blueprint', 'V-Ray', 'unreal engine render', 'physically based rendering'. Camera and lens words finish the framing: '24mm', 'tilt-shift', 'aerial', 'eye-level', 'shallow depth of field'. Learn a handful of live, high-signal terms in each family and you can compose almost any image.

You don't need hundreds of words per family - you need a reliable dozen you actually know. A working professional often runs on a surprisingly small core vocabulary, deployed with precision, plus the confidence to test a new term when a project demands it. Breadth is nice; fluency with a proven few is what ships work. That's why the personal-list habit below matters more than memorising any published 'prompt keyword' mega-list: a borrowed list is someone else's fluency, and it won't be there when the tool's autocomplete isn't.

A DESIGNER'S VOCABULARY MAP MOVEMENTS brutalist, art deco, metabolist, deconstr- uctivist, bauhaus STYLES Japandi, wabi-sabi, Kerala vernacular, mid-century modern MATERIALS travertine, laterite, board-formed concrete, burnished brass LIGHT golden hour, overcast, raking light, chiaro- scuro, backlit MEDIUM / RENDER architectural photo, axonometric, gouache, V-Ray, blueprint CAMERA / LENS 24mm wide, tilt-shift, eye-level, aerial, shallow depth SPECIFIC BEATS PRETTY. Each cell is a dial the model actually turns. Keep your own running list -- the terms that reliably worked become a personal palette you reach for without thinking.
Zoom
The six families of vocabulary, each feeding a prompt slot. Learn a handful of live, high-signal terms per family and you can compose almost any image - then keep the winners in a personal list.

Precision, not obscurity - and the India angle

There's a trap on the far side of specificity: reaching for a term so obscure the model never learned it. Naming a little-known regional architect or a boutique material may steer nothing, or worse, drift toward whatever few mislabelled images existed. The sweet spot is specific but well-represented - terms with enough presence in the training data to have formed a stable cluster.

This matters especially for Indian and other non-Western contexts, where the data is thinner and more stereotyped. 'Indian house' tends to collapse into cliche; 'Kerala vernacular with sloping Mangalore-tile roof and laterite walls' pulls far more faithfully because each component is well-attested. When a broad regional term underperforms, decompose it into its named material and formal parts - climate response, roof form, material, courtyard type - and let those specifics do the work the umbrella term couldn't. Module 6.4 goes deep on Indian-context interiors; the vocabulary habit you build here is what makes it possible.

When you're unsure whether a term carries weight, test it in isolation - one term, everything else held constant - and see if the image genuinely moves. That single-variable test (Lesson 1.4) is also how you discover vocabulary, and it's the only honest way to tell a term that truly steers from one you merely hope does. Guessing wastes rolls; testing builds a list you can trust.

WEAK WORDS vs STRONG WORDS LOW SIGNAL -- the model averages, you get mush beautiful modern nice stylish aesthetic HIGH SIGNAL -- named, bounded, learnable regions brutalist travertine golden hour tilt-shift A word only steers if the training data used it consistently. Adjectives of taste ('beautiful') were pinned to no particular look, so they move almost nothing. Trade praise for precision.
Zoom
Weak words versus strong words. Taste-adjectives ('beautiful', 'modern') were pinned to everything, so they steer almost nothing; named things ('brutalist', 'travertine', 'golden hour') name a bounded cluster the model can actually turn toward.

Build your own palette

The most valuable output of this module isn't a single image - it's a personal vocabulary: your own running list of terms that reliably did what you wanted, grouped by family. Professional AI users all keep one, because tool memory is short and yours isn't.

Start a simple document with columns for movement, style, material, light, medium and camera. Every time a term clearly earns its place - it steered the image the way you intended - write it down with a one-line note on what it does ('board-formed concrete -> visible timber grain in the concrete, reads as crafted, not raw'). Over weeks this becomes a palette you reach for without thinking, and it compounds: your prompts get faster and better because you're assembling from parts you've already proven.

Two refinements make the palette sharper. First, note antagonists - terms that fight each other ('minimalist' plus 'ornate' cancels out, 'photoreal' plus 'watercolour' produces mush) so you stop wasting rolls on contradictions. Second, note strength - which terms dominate a prompt even when buried, so you can place them deliberately. A curated vocabulary is the difference between prompting from memory and prompting from a proven instrument. It is also the most portable skill in this course: it survives every tool change, because it lives with you.

A DESIGNER'S VOCABULARY MAP MOVEMENTS brutalist, art deco, metabolist, deconstr- uctivist, bauhaus STYLES Japandi, wabi-sabi, Kerala vernacular, mid-century modern MATERIALS travertine, laterite, board-formed concrete, burnished brass LIGHT golden hour, overcast, raking light, chiaro- scuro, backlit MEDIUM / RENDER architectural photo, axonometric, gouache, V-Ray, blueprint CAMERA / LENS 24mm wide, tilt-shift, eye-level, aerial, shallow depth SPECIFIC BEATS PRETTY. Each cell is a dial the model actually turns. Keep your own running list -- the terms that reliably worked become a personal palette you reach for without thinking.
Zoom
The six families of vocabulary, each feeding a prompt slot. Learn a handful of live, high-signal terms per family and you can compose almost any image - then keep the winners in a personal list.

Keep the list. Your proven words outlast every tool.

Combinations, antagonists and the honest ceiling

Individual words are only half the craft; how they combine is the other half. Terms stack, and they can reinforce or cancel. 'Brutalist' plus 'board-formed concrete' plus 'raking light' reinforce - they belong to the same world, so the image sharpens. 'Minimalist' plus 'ornate', or 'brutalist' plus 'delicate', pull in opposite directions, and the model resolves the fight by averaging toward a bland compromise that satisfies neither. Learning your vocabulary means learning which terms are friends and which are enemies, so you compose coherent worlds rather than contradictions.

There is also a hierarchy of dominance. Some terms are so strong they colour everything around them - name a famous movement or a signature material and it can override subtler cues you cared about. When a dominant term is drowning the rest of your intent, that's your cue to either move it later in the prompt, dial it down with a weight (Lesson 1.3), or split the idea across a couple of gentler terms.

And there is an honest ceiling worth stating plainly. Vocabulary steers appearance - it can make a facade read as travertine or a room as Japandi - but no word makes the model understand structure, program or code. A perfectly chosen prompt still produces appearance without logic (Module 0.1). Vocabulary is how you get the look exactly right; it is never how you get the building right. That distinction is what keeps a skilled prompter from mistaking a beautiful render for a resolved design - and it's the thread that runs through every remaining module of this course.

WEAK WORDS vs STRONG WORDS LOW SIGNAL -- the model averages, you get mush beautiful modern nice stylish aesthetic HIGH SIGNAL -- named, bounded, learnable regions brutalist travertine golden hour tilt-shift A word only steers if the training data used it consistently. Adjectives of taste ('beautiful') were pinned to no particular look, so they move almost nothing. Trade praise for precision.
Zoom
Weak words versus strong words. Taste-adjectives ('beautiful', 'modern') were pinned to everything, so they steer almost nothing; named things ('brutalist', 'travertine', 'golden hour') name a bounded cluster the model can actually turn toward.

Words are friends or enemies. Compose worlds, not contradictions.

Tools & techniques you'll meet in this lesson

High-signal term families (movement / style / material / light / medium / camera)

A vocabulary map for filling the prompt slots

Tool-agnostic; the same families steer Midjourney, Stable Diffusion, Firefly and DesignAI.

Single-term isolation test

Verifying whether a candidate word actually moves the image

Hold everything else constant, add one term, judge the shift; the honest way to grow a vocabulary.

Decomposition of regional terms

Turning 'Indian house' into named roof / material / courtyard parts

The fix for thin, stereotyped training data on non-Western contexts; sets up Module 6.4.

Personal vocabulary document

A living, grouped list of proven terms with notes

The most portable asset in this course - it survives every tool change.

Hands-on workshop

Workshop - start your vocabulary document

You'll test candidate terms honestly and begin the personal palette you'll carry for the rest of the course. Any text-to-image tool works.

Any text-to-image tool (Midjourney, a free Stable Diffusion space, Adobe Firefly, or Studio Matrx DesignAI) plus a plain text or spreadsheet document.

Given & goal
Goal: separate words that steer from words that drift, and record the winners
Inputs: one text-to-image tool + a plain document with six columns
Time: ~35 minutes
  1. 1Pick one fixed base prompt, e.g. a courtyard house, architectural photograph. Generate it once as your control.
  2. 2Test a weak word: add beautiful and regenerate. Then a strong one: swap to brutalist. Compare against control - see which genuinely moved the image.
  3. 3Run a materials test: swap in laterite, then travertine, then Corten steel, one at a time, everything else fixed. Note how each reads.
  4. 4Do the India decomposition: generate Indian house, then Kerala vernacular, Mangalore-tile roof, laterite walls, verandah - compare fidelity and note why the second is better.
  5. 5Record winners in your document under movement / style / material / light / medium / camera, each with a one-line note on what it does. This file is your deliverable and your instrument going forward.

You’ll walk away with
A started vocabulary document with at least eight proven terms across the six families, each annotated, plus one before/after pair showing a regional term decomposed into specifics.

The worked example

Three altitudes on the same idea

Read the band that fits you — or all three.

For the architectConcept, form & communication

Your architectural literacy is a direct advantage - you already know the movements, the tectonic vocabulary, the material names the model responds to. The task is mapping what you know onto what the model learned: some canonical terms steer beautifully, some obscure ones fall flat. Build a studio vocabulary of proven terms and it becomes shared shorthand for a whole team's AI output.

For the interior designerStyle, materials & mood

Material and style names are your sharpest tools, and interiors reward them more than any other subject. 'Lime plaster, rattan, aged brass, terracotta floor' composes a room the way a named palette does. Keep a vocabulary organised by mood and material family; it doubles as a client-facing language for translating a brief into an image fast.

For the studentSkills, portfolio & jobs

Building a personal prompt vocabulary is genuine, transferable expertise - start the document today. It forces you to learn real architectural and design terms (movements, materials, lighting) that serve you far beyond AI, and it's a tangible asset you can show. The habit of testing whether a term truly steers, then recording it, is exactly the rigour that separates a practitioner from a prompt-copier.

Misconception check

The fancier and more specialised my words, the more control I get.

Only up to a point. Specificity helps because it names a bounded look - but a term so obscure the model never learned it steers nothing, and can even drift toward mislabelled data. The real target is 'specific and well-represented': named things the training data saw often enough to form a stable cluster. When an exotic or hyper-local term underperforms, decompose it into well-attested material and formal parts and let those carry the image.
Try it

Do it yourself

No tool needed - reason it through.

  1. 1Why does 'travertine' steer the image strongly while 'beautiful' barely moves it?
  2. 2Name one high-signal term in each family: movement, material, light, medium.
  3. 3What's the risk of using a very obscure, hyper-local term?
  4. 4Rewrite 'a nice traditional Indian home' into well-attested named parts.
  5. 5What two things should you record next to each proven term in your vocabulary?
Take this with you

The one line to carry out

The model steers on named, well-represented things - movements, styles, materials, light and render words - not on adjectives of taste, so trade praise for precision and keep a personal vocabulary of the terms that proved themselves. That list is the most portable skill in this course; it outlives every tool.
Take it further
References & further reading

Peer-reviewed journals & authoritative standards

  1. 01Rombach, R., Blattmann, A., Lorenz, D., Esser, P., & Ommer, B. - High-Resolution Image Synthesis with Latent Diffusion ModelsIEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2022.
  2. 02Saharia, C., et al. - Photorealistic Text-to-Image Diffusion Models with Deep Language Understanding (Imagen)Advances in Neural Information Processing Systems (NeurIPS), 2022.
  3. 03Podell, D., et al. - SDXL: Improving Latent Diffusion Models for High-Resolution Image SynthesisarXiv preprint, 2023.
  4. 04Midjourney - Official Documentation (prompt & style guidance)Midjourney, Inc., 2026.
Related lessons
Recap
Words steer only if the training data used them consistently. Named things (brutalist, travertine, golden hour) work; taste words (beautiful, modern) drift. Keep a map of term families, test candidates in isolation, decompose thin regional terms into specifics, and record proven terms in a personal vocabulary.
Carry forward →

You can now fill the slots with words that land. But the prompt text is only half the controls - next we go beyond the words: negative prompts, explicit weights, aspect ratio, stylize and seeds, the parameters that steer precisely.

A

The author

Amogh N P

Architect, interior designer, and creative polymath. Studio Matrx began in his notebooks — his vision of design made honest, useful, and open to everyone. Its Academy is written and taught in his memory, and free, forever.

More about Amogh →