What does it mean to give a trait to a character?

Answer 1

Traits means anything about the character. Giving your characters traits just means writing some descriptions of them -- this can be either short descriptions, showing their traits by action scenes, or even showing them by dialogue.

Answer 2

Giving a trait to a character means assigning a specific attribute or characteristic to that character to help define their personality or behavior. Traits can include qualities like kindness, intelligence, courage, or any other feature that contributes to making the character unique and believable within a story.