he terms butch and femme are often used to describe lesbians, but also occasionally gay men.

Butch is an adjective used to describe one's gender performance. A masculine person (of either sex) can be described as butch.[1]

Stereotypes and definitions of butch and femme vary greatly, even within tight-knit gay and lesbian communities. "Butch" tends to denote masculinity displayed by a female beyond that of what would be considered a "tomboy." It is not uncommon for butch-looking females to meet social disapproval. A butch woman could be compared to an effeminate man in the sense that both genders are historically linked to gay communities and stereotypes[original research?].

For western lesbians, butch-femme has had varying levels of acceptance throughout the 20th century. The practices of 'femme on femme' and 'butch on butch' sex preferences are sometimes repressed by cultural mores, notably in cultures where masculine tops who have sex with feminine bottoms or transwomen are considered straight and in the mid-twentieth century U.S. working-class lesbian butch-femme scene.

Alternate conceptualizations of femme-butch persons suggest that butch and femme are, in fact, not hetero-mimicries or attempts to take up so-called 'traditional' gender roles. In the first instance, this argument situates 'traditional' gender roles as biological, ahistorical imperatives - a claim that has been contested by writers from Sigmund Freud to Judith Butler, Jay Prosser, Anne Fausto-Sterling, and many others. These authors take up gender as both socially and historically constructed, rather than as essential, 'natural', or strictly biological. Specifically with regard to butches and femmes, lesbian historian Joan Nestle argues that femme and butch may be seen as distinct genders in and of themselves (see The Persistent Desire, 1993). Elsewhere, it has been argued that butch and femme are 'read' as imperfect copies of heterosexual gender roles due to the uncritical assumption that masculinity and femininity are inseparable from genetic male-ness or female-ness. For example, to suggest that a butch woman is attempting to annex heterosexual male power or privilege - a claim leveled by some radical feminists (see Sheila Jeffreys and others) - fails to take note of the social censure leveled at individuals who reject social and cultural imperatives that link biological sex with what Judith Butler calls 'gender performance' (see Bodies that Matter, 1993).