The terms Gay, Lesbian, and Homosexuality refer to sexual and romantic attraction between individuals of the same sex. A homosexual may or may not identify themselves as gay or lesbian. Homosexuality, as an identifier, is usually contrasted with heterosexuality and bisexuality. The term gay is used predominantly to refer to self-identified homosexuals of either sex. Lesbian is a gender-specific term that is only used for self-identified homosexual females. Some terminology: In dealing with sexual orientation and preferences, the acronym LGBT is sometimes used. In the acronym LGBT (which is also written as GLBT), L is for lesbian, G for gay, B for bisexual, and T for transgender individuals). "Gay" in modern usage usually refers to homosexual men or women. Gay sometimes also refers to the culture of homosexual men and women (as in "gay history"), to things perceived by others to be typical of gay people (as in "gay music"), or to same-sex more generally (as in "gay marriage"). Most people consider gay and homosexual to be synonyms. Note that while Gay applies to men and women equally, the term lesbian is gender-specific and is used exclusively to describe homosexual women. There is no corresponding word for gay men. Sexual orientation, behavior, and self-identification are not necessarily aligned in a clear-cut fashion for a given individual and the manifestation of sexual orientation is subject to a considerable variability. Thus it is common for homosexual individuals