two-timer vs cheater

two-timer and cheater both are nouns.

Word	Noun	Adjective	Verb	Adverb
two-timer	Yes	No	No	No
cheater	Yes	No	No	No

As nouns, cheater is a hypernym of two-timer; that is, cheater is a word with a broader meaning than two-timer:

Other hypernyms of two-timer include beguiler, cheat, deceiver, slicker, trickster.

As nouns, cheater is a hypernym of two-timer; that is, cheater is a word with a broader meaning than two-timer:

two-timer: someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else
cheater: someone who leads you to believe something that is not true

Other hypernyms of two-timer include beguiler, cheat, deceiver, slicker, trickster.

two-timer (noun)	cheater (noun)
a person who says one thing and does another	someone who leads you to believe something that is not true
someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else