1. The difference between the way things are and the way things should be, or the way things are expected to be.
2. Cleverness and quickness of mind.
3. An imitation that ridicules.
4. An object that stands for a larger concept or idea.
5. A literary work in which human vice or folly is attacked or ridiculed.
6. When cartoonists amplify certain characteristics of people or things in order to make a point.
7. A portrait that distorts the essence of a person or thing to create an easily identifiable likeness.
8. A comparison between two things for the purpose of explanation or clarification.