suit of armor vs armour

suit of armor and armour both are nouns.

Word	Noun	Adjective	Verb	Adverb
suit of armor	Yes	No	No	No
armour	Yes	No	Yes	No

As nouns, armour is a hypernym of suit of armor; that is, armour is a word with a broader meaning than suit of armor:

Other hypernyms of suit of armor include armor.

suit of armor (noun)	armour (noun)
armor that protects the wearer's whole body	tough more-or-less rigid protective covering of an animal or plant
	protective covering made of metal and used in combat
	a military unit consisting of armored fighting vehicles

suit of armor (verb)	armour (verb)
	equip with armor