emulator vs worker

emulator and worker both are nouns.

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

As nouns, worker is a hypernym of emulator; that is, worker is a word with a broader meaning than emulator:

Other hypernyms of emulator include actor, doer.

emulator (noun)	worker (noun)
someone who copies the words or behavior of another	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done