educatee vs pupil

educatee and pupil both are nouns.

Word	Noun	Adjective	Verb	Adverb
educatee	Yes	No	No	No
pupil	Yes	No	No	No

As nouns, educatee and pupil are synonyms defined as:

educatee and pupil: a learner who is enrolled in an educational institution

Other synonyms of educatee include student.

educatee (noun)	pupil (noun)
a learner who is enrolled in an educational institution	the contractile aperture in the center of the iris of the eye; resembles a large black dot
	a learner who is enrolled in an educational institution
	a young person attending school (up through senior high school)