unfaithful vs adulterous

unfaithful and adulterous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unfaithful	No	Yes	No	No
adulterous	No	Yes	No	No

unfaithful (adjective)	adulterous (adjective)
not true to duty or obligation or promises	characterized by adultery
having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend	not faithful to a spouse or lover
having the character of, or characteristic of, a traitor
not trustworthy