Materials of Design—Masses, dots, and lines which compose the completed design.
Motif—The original source for a decorative scheme or element.
Natural Forms—Motifs of design chosen from nature, either animate or inanimate.
Naturalistic (Design)—The direct imitation of forms taken from nature, retaining as much as possible of their original shape, color, etc.
Optical Illusion—An error, normal to the average eye, in the perception of certain lines, angles, and spaces. Recognized by the designers of type and of typography.
Ornament—Similar to decoration.
Persian (Art)—Covered by the period from about 550 B.C. to 330 B.C. Derived from Assyrian art but strongly influenced by the Greek.
Point of Balance—The point, unindicated in the finished design, upon which the various attractions of the design are balanced in appearance.
Proportion—The comparative relationship between the various elements in a design.
Renaissance—The period of art activity in the 14th and 15th centuriesin Italy. A revival of the classic arts but developed and enriched beyond former heights.