ring armour vs body armor

ring armour and body armor both are nouns.

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

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

Other hypernyms of ring armour include body armour, cataphract, coat of mail, suit of armor, suit of armour.

ring armour (noun)	body armor (noun)
(Middle Ages) flexible armor made of interlinked metal rings	armor that protects the wearer's whole body