high-up vs personage

high-up and personage both are nouns.

Word	Noun	Adjective	Verb	Adverb
high-up	Yes	No	No	No
personage	Yes	No	No	No

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

high-up: an important or influential (and often overbearing) person
personage: a person whose actions and opinions strongly influence the course of events

Other hypernyms of high-up include important person, influential person.

high-up (noun)	personage (noun)
an important or influential (and often overbearing) person	another word for person; a person not meriting identification
	a person whose actions and opinions strongly influence the course of events