Dr. simpson defines personality as "distinctive, characteristic patterns of thought, emotion and behavior that uniquely define an individual." what is meant by distinctive and characteristic (that is, consistent) in this definition?

In this definition, distinctive means in the same situation, people will react differently. Characteristic in this definition means the stability (consistency) of the thoughts, behavior, and feelings of a person overtime and in different kind of situations.

In psychology, personality is defined as distinct differences in characteristic sequence of feeling, behaving and thinking.