grad vs bookman

grad and bookman both are nouns.

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

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

grad: a person who has received a degree from a school (high school or college or university)
bookman: a learned person; someone who by long study has gained mastery in one or more disciplines

Other hypernyms of grad include scholar, scholarly person.

grad (noun)	bookman (noun)
a person who has received a degree from a school (high school or college or university)	a learned person; someone who by long study has gained mastery in one or more disciplines
one-hundredth of a right angle