decarbonise vs British spelling

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

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

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

decarbonise (verb)	British spelling (verb)
remove carbon from (an engine)