learner vs tutee

learner and tutee both are nouns.

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

As nouns, tutee is a hyponym of learner; that is, tutee is a word with a more specific, narrower meaning than learner:

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

Other hyponyms of learner include memoriser, memorizer, quick study, sponge, dweeb, grind, nerd, swot, wonk.

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