brief vs concise

brief is a noun but concise is not a noun.

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

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

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

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