Gender refers to an individual’s personal sexual identity, and the behaviors and attributes typically associated with this sexual identity. Gender is typically categorized as either masculine or feminine. The characteristics of gender can vary significantly between different societal groups.
Gender should not be confused with sex, which refers to the biological and physiological features of men and women. While in most cases a person’s gender and sex match, this is not always the case. For example, a transgender person may have been born a male, but decide to live life as a female. Whereas gender is a fluid notion, which can change according to time and place, one's sex is fixed.