behemoth vs personage

behemoth and personage both are nouns.

Word	Noun	Adjective	Verb	Adverb
behemoth	Yes	No	No	No
personage	Yes	No	No	No

As nouns, personage is a hypernym of behemoth; that is, personage is a word with a broader meaning than behemoth:

behemoth: a person of exceptional importance and reputation
personage: a person whose actions and opinions strongly influence the course of events

Other hypernyms of behemoth include important person, influential person.

behemoth (noun)	personage (noun)
someone that is abnormally large and powerful	another word for person; a person not meriting identification
a person of exceptional importance and reputation	a person whose actions and opinions strongly influence the course of events