concise vs brief

concise is not a noun while brief is a noun.

Word	Noun	Adjective	Verb	Adverb
concise	No	Yes	No	No
brief	Yes	Yes	Yes	No

concise (noun)	brief (noun)
	a condensed written summary or abstract
	a document stating the facts and points of law of a client's case

concise (adjective)	brief (adjective)
expressing much in few words	concise and succinct
	(of clothing) very short
	of short duration or distance

concise (verb)	brief (verb)
	give essential information to someone