armored personnel carrier vs armoured personnel carrier

armored personnel carrier and armoured personnel carrier both are nouns.

Word	Noun	Adjective	Verb	Adverb
armored personnel carrier	Yes	No	No	No
armoured personnel carrier	Yes	No	No	No

As nouns, armored personnel carrier and armoured personnel carrier are synonyms defined as:

armored personnel carrier and armoured personnel carrier: (military) an armored vehicle (usually equipped with caterpillar treads) that is used to transport infantry

Other synonyms of armored personnel carrier include APC.

armored personnel carrier (noun)	armoured personnel carrier (noun)
(military) an armored vehicle (usually equipped with caterpillar treads) that is used to transport infantry	(military) an armored vehicle (usually equipped with caterpillar treads) that is used to transport infantry