delusion vs deception

delusion and deception both are nouns.

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

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

Other hypernyms of delusion include deceit, dissembling, dissimulation.

delusion (noun)	deception (noun)
the act of deluding; deception by creating illusory ideas	the act of deceiving
a mistaken or unfounded opinion or idea	an illusory feat; considered magical by naive observers
(psychology) an erroneous belief that is held in the face of evidence to the contrary	a misleading falsehood