imitation vs travesty

imitation and travesty both are nouns.

Word	Noun	Adjective	Verb	Adverb
imitation	Yes	Yes	No	No
travesty	Yes	No	Yes	No

As nouns, travesty is a hyponym of imitation; that is, travesty is a word with a more specific, narrower meaning than imitation:

imitation: a representation of a person that is exaggerated for comic effect
travesty: a composition that imitates or misrepresents somebody's style, usually in a humorous way

Other hyponyms of imitation include mock-heroic, burlesque, lampoon, mockery, parody, pasquinade, put-on, send-up, sendup, spoof, takeoff.

imitation (noun)	travesty (noun)
copying (or trying to copy) the actions of someone else	a comedy characterized by broad satire and improbable situations
something copied or derived from an original	a composition that imitates or misrepresents somebody's style, usually in a humorous way
the doctrine that representations of nature or human behavior should be accurate imitations
a representation of a person that is exaggerated for comic effect

imitation (adjective)	travesty (adjective)
not genuine or real; being an imitation of the genuine article

imitation (verb)	travesty (verb)
	make a travesty of