misdemeanour vs British spelling

misdemeanour and British spelling both are nouns.

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

misdemeanour (noun)	British spelling (noun)
a crime less serious than a felony	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')