bicolour vs British spelling

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

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

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

bicolour (adjective)	British spelling (adjective)
having two colors