Queer is an umbrella term for sexual and gender minorities who are not heterosexual or are not cisgender. Originally meaning "strange" or "peculiar", queer came to be used pejoratively against those with same-sex desires or.
LGBT (or GLBT) is an initialism that stands for lesbian, gay, bisexual, and transgender. In use since the s, the term is an adaptation of the initialism " LGB ".
Heterosexism excludes the needs, concerns, and life experiences of lesbian, gay , bisexual and queer people while it gives advantages to heterosexual people.