psychology vs delusion

psychology and delusion both are nouns.

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

psychology (noun)	delusion (noun)
the science of mental life	the act of deluding; deception by creating illusory ideas
	a mistaken or unfounded opinion or idea
	(psychology) an erroneous belief that is held in the face of evidence to the contrary