adulting vs behaviour

adulting and behaviour both are nouns.

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

As nouns, behaviour is a hypernym of adulting; that is, behaviour is a word with a broader meaning than adulting:

Other hypernyms of adulting include behavior, conduct, doings.

adulting (noun)	behaviour (noun)
acting like an adult	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