个人的固定特性personality; personalities(plural)

• 人的个性

  character of a person

• 个性特征

  character traits

• 个性直爽

  have a forthright personality

• 个性软弱的人

  person with a weak personality

• 他个性很强。

  He has a very strong personality.

事物的特性property; properties(plural)