aper vs imitator

aper and imitator both are nouns.

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

As nouns, aper and imitator are synonyms defined as:

Other synonyms of aper include ape, copycat, emulator.

aper (noun)	imitator (noun)
someone who copies the words or behavior of another	someone who copies the words or behavior of another
	someone who (fraudulently) assumes the appearance of another