valedictorian vs bookman

valedictorian and bookman both are nouns.

Word	Noun	Adjective	Verb	Adverb
valedictorian	Yes	No	No	No
bookman	Yes	No	No	No

As nouns, bookman is a hypernym of valedictorian; that is, bookman is a word with a broader meaning than valedictorian:

valedictorian: the student with the best grades who usually delivers the valedictory address at commencement
bookman: a learned person; someone who by long study has gained mastery in one or more disciplines

Other hypernyms of valedictorian include scholar, scholarly person.

valedictorian (noun)	bookman (noun)
the student with the best grades who usually delivers the valedictory address at commencement	a learned person; someone who by long study has gained mastery in one or more disciplines