If the two word phrase "character trait" is considered a single part of speech, it is a noun. Alternatively, one could call "trait" a noun and "character" a substantive adjective modifying "trait".
"Culture trait" could be considered a compound noun, but more traditionally "trait" would be considered a noun and "culture" an adjective modifying "trait".
Well, darling, "character trait" is a noun phrase. It's a combo of a noun ("character") and a noun ("trait") that describes a characteristic or quality of a person. So, next time you're playing grammar police, you can confidently slap that label on it and call it a day.
Virtue is a noun.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.
The part of speech of "came" is a verb.