Subcultures can be identified by the members' age, race, ethnicity, social class, location, or gender. The qualities that distinguish among subcultures may be linguistic, aesthetic, religious, political, sexual, geographical, or a combination of factors. Members of a subculture often signal each other through the use of fashion style, stereotypical behaviors, and use of a secret language created to prevent outsiders from understanding them (this is known as Argot). They also live out particular relations to places: Ken Gelder talks about 'subcultural geographies' along these lines.