corselet vs cataphract

corselet and cataphract both are nouns.

Word	Noun	Adjective	Verb	Adverb
corselet	Yes	No	No	No
cataphract	Yes	No	No	No

As nouns, cataphract is a hypernym of corselet; that is, cataphract is a word with a broader meaning than corselet:

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

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

corselet (noun)	cataphract (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