armored personnel carrier vs APC

armored personnel carrier and APC both are nouns.

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

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

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

Other synonyms of armored personnel carrier include armoured personnel carrier.

armored personnel carrier (noun)	APC (noun)
(military) an armored vehicle (usually equipped with caterpillar treads) that is used to transport infantry	a drug combination found in some over-the-counter headache remedies (aspirin and phenacetin and caffeine)
	(military) an armored vehicle (usually equipped with caterpillar treads) that is used to transport infantry