Gender variance or gender nonconformity is behavior or gender expression by an individual that does not match masculine or feminine gender norms. A gender-nonconforming person may be variant in their gender identity, being transgender or non-binary, or they may be cisgender. In the case of transgender people, they may be perceived, or perceive themselves as, gender-nonconforming before transitioning, but might not be perceived as such after transitioning. Transgender adults who appear gender-nonconforming after transition are more likely to experience transphobic discrimination.
People who exhibit gender variance may be called gender-variant, gender-nonconforming, gender-diverse, or gender-atypical. The terms gender variance and gender-variant are used by scholars of psychology, psychiatry, anthropology, and gender studies, as well as advocacy groups of gender-variant people themselves. The term gender-variant is deliberately broad, encompassing such specific terms as transsexual, butch and femme, queen, sissy, tomboy, femboy, travesti, or hijra.
The word transgender usually has a narrower meaning and different connotations, including an identification that differs from the gender assigned at birth. GLAAD (formerly the Gay and Lesbian Alliance Against Defamation)'s Media Reference Guide defines transgender as an "umbrella term for people whose gender identity or gender expression differs from the sex they were assigned at birth." Not all gender-variant people identify as transgender, and not all transgender people identify as gender-variant - many identify simply as men or women. Gender identity is one's internal sense of their own gender; while most people have a gender identity of a boy or a man, or a girl or a woman, gender identity for other people is a more complex experience.
Furthermore, gender expression is the external manifestation of one's gender identity, usually through "masculine", "feminine", or gender-variant presentation or behavior.