bulletproof vest vs body armour

bulletproof vest and body armour both are nouns.

Word	Noun	Adjective	Verb	Adverb
bulletproof vest	Yes	No	No	No
body armour	Yes	No	No	No

As nouns, body armour is a hypernym of bulletproof vest; that is, body armour is a word with a broader meaning than bulletproof vest:

Other hypernyms of bulletproof vest include body armor, cataphract, coat of mail, suit of armor, suit of armour, vest, waistcoat.

bulletproof vest (noun)	body armour (noun)
a vest capable of resisting the impact of a bullet	armor that protects the wearer's whole body