British spelling vs concertise

British spelling is a noun but concertise is not a noun.

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

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

British spelling (verb)	concertise (verb)
	give concerts; perform in concerts