imitator vs epigone

imitator and epigone both are nouns.

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

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

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

Other hyponyms of imitator include epigon, parrot.

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