Contrast- the state of being strikingly different from something else, typically something in juxtaposition or close association.

( 11 point Arial Sans Serif)
Repetition- the action of repeating something that has already been said or written.

(11 point PT Serif)
Alignment- arrangement in a straight line, or in correct or appropriate relative positions.

(11 point Arial Sans Serif)

Proximity- nearness in space, time, or relationship.

(11 point PT Serif)