cheat on vs cozen

cheat on and cozen both are verbs.

Word	Noun	Adjective	Verb	Adverb
cheat on	No	No	Yes	No
cozen	No	No	Yes	No

As verbs, cozen is a hypernym of cheat on; that is, cozen is a word with a broader meaning than cheat on:

Other hypernyms of cheat on include deceive, delude, lead on.

cheat on (verb)	cozen (verb)
be sexually unfaithful to one's partner in marriage	cheat or trick
	act with artful deceit
	be false to; be dishonest with