behavior vs trait

behavior and trait both are nouns.

Word	Noun	Adjective	Verb	Adverb
behavior	Yes	No	No	No
trait	Yes	No	No	No

As nouns, trait is a hypernym of behavior; that is, trait is a word with a broader meaning than behavior:

behavior: (behavioral attributes) the way a person behaves toward other people
trait: a distinguishing feature of your personal nature

behavior (noun)	trait (noun)
manner of acting or controlling yourself	a distinguishing feature of your personal nature
(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