traitor vs two-timer

traitor and two-timer both are nouns.

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

As nouns, traitor and two-timer are synonyms defined as:

Other synonyms of traitor include betrayer, double-crosser, double-dealer.

traitor (noun)	two-timer (noun)
someone who betrays his country by committing treason	a person who says one thing and does another
a person who says one thing and does another	someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else