Cases of word usage

1) a picture, description, imitation, of a person's voice, behaviour etc stressing certain features in order to amuse or ridicule (caricature)

2) a person who jests, especially (in olden times) a man paid to make jokes to amuse the court or nobles (jester)

3) to do tricks, perform (with balls, plates etc thrown into the air) to amuse people (juggle)

4) (a piece of) writing intended to amuse by imitating the style of writing used by somebody else; a poor example (parody)