delusion vs psychology

delusion and psychology both are nouns.

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

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