Figurative Language

Figurative: Expressing one thing in terms normally denoting another with which it may be regarded as analogous.
Figure of Speech: A form of expression used to convey meaning or heighten effect often by comparing or identifying one thing with another that has a meaning or connotation familiar to the reader or listener.
Imagery: Figurative language. Pictures produced by an imaging system.
Trope: The use of a word or expression in a figurative sense.

All of these terms have to deal with a form of expression that makes speech more interesting and understandable. They put pictures in our heads and make us think about what people are saying.