Zoning
Dividing a space into functional areas by use rather than by walls — a living zone, a dining zone, a work zone — defined with a rug, a level change, lighting or furniture placement. Lets one open room hold several functions without partitions.
Function without walls
In a studio, a bookshelf set perpendicular to the wall zones “sleep” from “living” without a single brick — keeping the floor open and the light flowing.