British spelling vs vapour

British spelling and vapour both are nouns.

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

British spelling (noun)	vapour (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')	the process of becoming a vapor
	a visible suspension in the air of particles of some substance