duplicity vs dissembling

duplicity and dissembling both are nouns.

Word	Noun	Adjective	Verb	Adverb
duplicity	Yes	No	No	No
dissembling	Yes	No	No	No

As nouns, dissembling is a hypernym of duplicity; that is, dissembling is a word with a broader meaning than duplicity:

duplicity: acting in bad faith; deception by pretending to entertain one set of intentions while acting under the influence of another
dissembling: the act of deceiving

Other hypernyms of duplicity include deceit, deception, dissimulation.

duplicity (noun)	dissembling (noun)
acting in bad faith; deception by pretending to entertain one set of intentions while acting under the influence of another	the act of deceiving
a fraudulent or duplicitous representation	pretending with intention to deceive