imitator vs emulator

imitator and emulator both are nouns.

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

As nouns, imitator and emulator are synonyms defined as:

imitator and emulator: someone who copies the words or behavior of another

Other synonyms of imitator include ape, aper, copycat.

imitator (noun)	emulator (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