psychology vs behaviour

psychology and behaviour both are nouns.

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

psychology (noun)	behaviour (noun)
the science of mental life	manner of acting or controlling yourself
	(psychology) the aggregate of the responses or reactions or movements made by an organism in any situation
	(behavioral attributes) the way a person behaves toward other people
	the action or reaction of something (as a machine or substance) under specified circumstances