Islamist vs bookman

Islamist and bookman both are nouns.

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

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

Islamist: a scholar who is knowledgeable in Islamic studies
bookman: a learned person; someone who by long study has gained mastery in one or more disciplines

Other hypernyms of Islamist include scholar, scholarly person.

Islamist (noun)	bookman (noun)
an orthodox Muslim	a learned person; someone who by long study has gained mastery in one or more disciplines
a scholar who is knowledgeable in Islamic studies