armor vs armour

armor and armour both are nouns.

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

As nouns, armor and armour are synonyms defined as:

armor and armour: tough more-or-less rigid protective covering of an animal or plant

As nouns, armor and armour are synonyms defined as:

As nouns, armor and armour are synonyms defined as:

armor and armour: a military unit consisting of armored fighting vehicles

As verbs, armor and armour are synonyms defined as:

armor (noun)	armour (noun)
tough more-or-less rigid protective covering of an animal or plant	tough more-or-less rigid protective covering of an animal or plant
protective covering made of metal and used in combat	protective covering made of metal and used in combat
a military unit consisting of armored fighting vehicles	a military unit consisting of armored fighting vehicles

armor (verb)	armour (verb)
equip with armor	equip with armor