eminence grise vs personage

eminence grise and personage both are nouns.

Word	Noun	Adjective	Verb	Adverb
eminence grise	Yes	No	No	No
personage	Yes	No	No	No

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

eminence grise: (French) a person who exercises power or influence in certain areas without holding an official position
personage: a person whose actions and opinions strongly influence the course of events

Other hypernyms of eminence grise include important person, influential person.

eminence grise (noun)	personage (noun)
(French) a person who exercises power or influence in certain areas without holding an official position	another word for person; a person not meriting identification
	a person whose actions and opinions strongly influence the course of events