Planar
Definition 1 of 2

Definition
Planar refers specifically to items in 2D contexts

A planar object in art is depicted without depth.
Usage Context
Planar is mostly used in geometrical and technical discussions

In casual conversation, 'flat' might be preferred over 'planar'.
Connotations
Planar emphasizes clarity and simplicity in design

Planar designs are often praised for their elegance.
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