promote vs brevet

promote is not a noun while brevet is a noun.

Word	Noun	Adjective	Verb	Adverb
promote	No	No	Yes	No
brevet	Yes	No	Yes	No

As verbs, brevet is a hyponym of promote; that is, brevet is a word with a more specific, narrower meaning than promote:

Other hyponyms of promote include tenure, bring up, spot promote, ennoble, entitle, gentle, favor, favour, prefer.

promote (noun)	brevet (noun)
	a document entitling a commissioned officer to hold a higher rank temporarily (but without higher pay)

promote (verb)	brevet (verb)
make publicity for; try to sell (a product)	promote somebody by brevet, in the military
change a pawn for a better piece by advancing it to the eighth row, or change a checker piece for a more valuable piece by moving it to the row closest to your opponent
be changed for a superior chess or checker piece
give a promotion to or assign to a higher position
contribute to the progress or growth of