concentre vs British spelling

concentre is not a noun while British spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
concentre	No	No	Yes	No
British spelling	Yes	No	No	No

concentre (noun)	British spelling (noun)
	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

concentre (verb)	British spelling (verb)
bring into focus or alignment; to converge or cause to converge; of ideas or emotions