delusion vs dissembling

delusion and dissembling both are nouns.

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

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

Other hypernyms of delusion include deceit, deception, dissimulation.

delusion (noun)	dissembling (noun)
the act of deluding; deception by creating illusory ideas	the act of deceiving
a mistaken or unfounded opinion or idea	pretending with intention to deceive
(psychology) an erroneous belief that is held in the face of evidence to the contrary