learner vs assimilator

learner and assimilator both are nouns.

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

As nouns, learner and assimilator are synonyms defined as:

learner and assimilator: someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs

Other synonyms of learner include scholar, student.

learner (noun)	assimilator (noun)
someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs	someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs
works for an expert to learn a trade