The phrase "constitutional type" implies the natural physical and mental characteristics of an individual. There are distinct synonyms for this phrase which includes the term "temperament" which refers to a person's natural disposition, "disposition" which denotes the natural tendency of an individual's personality, and "nature" which refers to the inherent qualities of an individual. Other synonyms include "personality", "character", "makeup", "physique" and "build". These terms are interchangeable and can be used to describe a person's innate characteristics that determine their physical and psychological traits. It takes careful observation to identify and describe an individual's constitutional type and using synonyms can help describe these characteristics accurately.