assimilator vs worker

assimilator and worker both are nouns.

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

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

assimilator: someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs
worker: a person who acts and gets things done

Other hypernyms of assimilator include actor, doer.

assimilator (noun)	worker (noun)
someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs	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