personage vs somebody

personage and somebody both are nouns.

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

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

personage: another word for person; a person not meriting identification
somebody: a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential

Other hypernyms of personage include individual, mortal, person, someone, soul.

personage (noun)	somebody (noun)
another word for person; a person not meriting identification	a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential
a person whose actions and opinions strongly influence the course of events