A flat, low-relief decorative strip on a wall that corresponds to a column in its parts, since, it has a base, a shaft, and capital It is often fluted, in other words the surface is lined with parallel grooves
Pilasters are shallow decorative pillars attached to a wall. a flat square column attached to the wall of a building for decoration (pilastre, from , from pila; PILLAR). In Classical architecture, a shallow rectangular column built into a wall and projecting slightly beyond it. It has a capital and base and conforms to one of the orders. In Roman architecture the pilaster gradually became more decorative than structural, and it served to break up otherwise empty expanses of wall
A non-structural element that is typically shaped similarly to a column and partially projects from the face of a wall Pilasters can help divide a room visually creating an architectural element without encroaching too far into a room
A part of a wall that projects not more that one-half of its own width beyond the outside or inside face of a wall Chief purpose is to add strength but may also be decorative
An upright architectural member right-angled in plan, constructionally a pier (See Pier, 1 (b)), but architecturally corresponding to a column, having capital, shaft, and base to agree with those of the columns of the same order