corslet vs body armor

corslet and body armor both are nouns.

Word	Noun	Adjective	Verb	Adverb
corslet	Yes	No	No	No
body armor	Yes	No	No	No

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

corslet: a piece of body armor for the trunk; usually consists of a breastplate and back piece
body armor: armor that protects the wearer's whole body

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

corslet (noun)	body armor (noun)
a piece of body armor for the trunk; usually consists of a breastplate and back piece	armor that protects the wearer's whole body