Discourse communities are groups of people who share activities and spend substantial time together. They may be tightly knit speech communities or looser networks. Factors like social class, networks, education, and background influence language use. Gender is a social category that is one part of identity, while sex refers to biological attributes. Discourse and sexuality add the dimension of personal desire. Social variables and identities intersect with language use, as the way people speak is influenced by their group memberships and position in society.