student vs scholar

student and scholar both are nouns.

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

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

As nouns, student and scholar are synonyms defined as:

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

Other synonyms of student include assimilator, learner.

student (noun)	scholar (noun)
a learner who is enrolled in an educational institution	a learned person; someone who by long study has gained mastery in one or more disciplines
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
	a student who holds a scholarship