cataphract vs armour

cataphract and armour both are nouns.

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

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

Other hypernyms of cataphract include armor.

cataphract (noun)	armour (noun)
armor that protects the wearer's whole body	tough more-or-less rigid protective covering of an animal or plant
	protective covering made of metal and used in combat
	a military unit consisting of armored fighting vehicles

cataphract (verb)	armour (verb)
	equip with armor