cannon vs cataphract

cannon and cataphract both are nouns.

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

cannon (noun)	cataphract (noun)
a shot in billiards in which the cue ball contacts one object ball and then the other	armor that protects the wearer's whole body
lower part of the leg extending from the hock to the fetlock in hoofed mammals
a large artillery gun that is usually on wheels
heavy automatic gun fired from an airplane
(Middle Ages) a cylindrical piece of armor plate to protect the arm
heavy gun fired from a tank

cannon (verb)	cataphract (verb)
fire a cannon
make a cannon