epigon vs imitator

epigon and imitator both are nouns.

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

As nouns, imitator is a hypernym of epigon; that is, imitator is a word with a broader meaning than epigon:

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

Other hypernyms of epigon include ape, aper, copycat, emulator.

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