salutatory speaker vs bookman

salutatory speaker and bookman both are nouns.

Word	Noun	Adjective	Verb	Adverb
salutatory speaker	Yes	No	No	No
bookman	Yes	No	No	No

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

salutatory speaker: a graduating student with the second highest academic rank; may deliver the opening address at graduation exercises
bookman: a learned person; someone who by long study has gained mastery in one or more disciplines

Other hypernyms of salutatory speaker include scholar, scholarly person.

salutatory speaker (noun)	bookman (noun)
a graduating student with the second highest academic rank; may deliver the opening address at graduation exercises	a learned person; someone who by long study has gained mastery in one or more disciplines