People whose gender identity or expression does not conform to the sex they were assigned at birth are transgender. While individuals may be assigned to a sex at birth based on how they present biologically, their sense of their gender may differ. A trans man is a man who was identified as female at birth, and a trans woman is a woman who was identified as male. (Transsexual is an older term that referred to trans individuals who sought or undertook intervention to change their bodies.)
