underperformer vs student

underperformer and student both are nouns.

Word	Noun	Adjective	Verb	Adverb
underperformer	Yes	No	No	No
student	Yes	No	No	No

As nouns, student is a hypernym of underperformer; that is, student is a word with a broader meaning than underperformer:

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

Other hypernyms of underperformer include educatee, pupil.

underperformer (noun)	student (noun)
a business that is less successful than expected	a learner who is enrolled in an educational institution
a student who does not perform as well as expected or as well as the IQ indicates	someone (especially a child) who learns (as from a teacher) or takes up knowledge or beliefs