assimilate vs assimilator

assimilate is not a noun while assimilator is a noun.

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

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

assimilate (verb)	assimilator (verb)
become similar to one's environment
make similar
become similar in sound
take up mentally
take (gas, light or heat) into a solution