Individuality

n. pl. Individualities (#).
  1. The quality or state of being individual or constituting an individual; separate or distinct existence; oneness; unity.
  2. The character or property appropriate or peculiar to an individual; that quality which distinguishes one person or thing from another; the sum of characteristic traits; distinctive character; as, he is a person of marked individuality.
  3. A habit of thinking and acting in one's own distinctive manner and as one believes appropriate, not being heavily influenced by the opinions of others; -- of people.