armour vs British spelling

armour and British spelling both are nouns.

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

armour (noun)	British spelling (noun)
tough more-or-less rigid protective covering of an animal or plant	English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')
protective covering made of metal and used in combat
a military unit consisting of armored fighting vehicles

armour (verb)	British spelling (verb)
equip with armor