A lesbian is a female homosexual: a female who experiences romantic love or sexual attraction to other females.

Bisexuality is romantic attraction, sexual attraction or sexual behaviour toward both males and females, or romantic or sexual attraction to people of any sex or gender identity; this latter aspect is sometimes termed pansexuality.

Queer is an umbrella term for sexual and gender minorities that are not heterosexual or cisgender. Queer was originally used pejoratively against those with same-sex desires but, beginning in the late-1980s, queer scholars and activists began to reclaim the word.

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The questioning of one’s gender, sexual identity, sexual orientation, or all three is a process of exploration by people who may be unsure, still exploring, and concerned about applying a social label to themselves for various reasons.

Heterosexuality is romantic attraction, sexual attraction or sexual behavior between persons of the opposite sex or gender. As a sexual orientation, heterosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" to persons of the opposite sex; it also refers to a person's sense of identity-based on those attractions, related behaviors, and membership in a community of others who share those attractions. Someone who is heterosexual is commonly referred to as straight.

Gay is a term that primarily refers to a homosexual person or the trait of being homosexual. Gay is often used to describe homosexual males but lesbians may also be referred to as gay.

Transgender is an umbrella term for people whose gender identity differs from what is typically associated with the sex they were assigned at birth. It is sometimes abbreviated to trans.

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Transsexual experience a gender identity inconsistent or not culturally associated with the sex they were assigned at birth.

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Two-Spirit is a modern umbrella term used by some indigenous North Americans to describe gender-variant individuals in their communities, specifically people within indigenous communities who are seen as having both male and female spirits within them.

Pansexuality, or omnisexuality, is sexual attraction, romantic love, or emotional attraction toward people of any sex or gender identity. Pansexual people may refer to themselves as gender-blind, asserting that gender and sex are insignificant or irrelevant in determining whether they will be sexually attracted to others.

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Agender people, also called genderless, gender-free, non-gendered, or ungendered people are those who identify as having no gender or being without any gender identity. This category includes a very broad range of identities which do not conform to traditional gender norms.

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Asexuality (or non-sexuality) is the lack of sexual attraction to anyone, or low or absent interest in sexual activity. It may be considered the lack of a sexual orientation, or one of the variations thereof, alongside heterosexuality, homosexuality, and bisexuality.