underachiever vs educatee

underachiever and educatee both are nouns.

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

As nouns, educatee is a hypernym of underachiever; that is, educatee is a word with a broader meaning than underachiever:

underachiever: a student who does not perform as well as expected or as well as the IQ indicates
educatee: a learner who is enrolled in an educational institution

Other hypernyms of underachiever include pupil, student.

underachiever (noun)	educatee (noun)
a student who does not perform as well as expected or as well as the IQ indicates	a learner who is enrolled in an educational institution