sombre vs British spelling

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

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

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

sombre (adjective)	British spelling (adjective)
lacking brightness or color; dull
grave or even gloomy in character