armour vs armor

armour and armor both are nouns.

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

As nouns, armour and armor are synonyms defined as:

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

As nouns, armour and armor are synonyms defined as:

As nouns, armour and armor are synonyms defined as:

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

As verbs, armour and armor are synonyms defined as:

armour (noun)	armor (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

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