deceitful vs two-faced

deceitful and two-faced both are adjectives.

Word	Noun	Adjective	Verb	Adverb
deceitful	No	Yes	No	No
two-faced	No	Yes	No	No

As adjectives, deceitful and two-faced are synonyms defined as:

deceitful and two-faced: marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another

Other synonyms of deceitful include ambidextrous, double-dealing, double-faced, double-tongued, duplicitous, Janus-faced.

deceitful (adjective)	two-faced (adjective)
marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another	marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another
involving deception	having two faces--one looking to the future and one to the past