individuality vs trait

individuality and trait both are nouns.

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

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

individuality (noun)	trait (noun)
the quality of being individual	a distinguishing feature of your personal nature
the distinct personality of an individual regarded as a persisting entity