treacherous vs unfaithful

treacherous and unfaithful both are adjectives.

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

treacherous (adjective)	unfaithful (adjective)
dangerously unstable and unpredictable	not true to duty or obligation or promises
tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans	having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend
	having the character of, or characteristic of, a traitor
	not trustworthy