copycat vs epigone

copycat and epigone both are nouns.

Word	Noun	Adjective	Verb	Adverb
copycat	Yes	No	No	No
epigone	Yes	No	No	No

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

copycat: someone who copies the words or behavior of another
epigone: an inferior imitator of some distinguished writer, artist, or musician

Other hyponyms of copycat include epigon, parrot.

copycat (noun)	epigone (noun)
someone who copies the words or behavior of another	an inferior imitator of some distinguished writer, artist, or musician