Metaphor

Definition:  Do not use like or as to compare two unlike things that actually have something in common. Extended metaphor compare two unlike groups of things.

Example:  All the world is a stage,

                  And all the men and women merely players;

                  They have their exits and their entrances;

                   —William Shakespeare

Significance:  A metaphor help the reader create a verbal picture that helps the reader to see ideas and feels what the poet means.