A celebrity is a famous person. The etymological origin of the word is "one who is celebrated." An alternative definition of a celebrity is a person who is famous for being famous (regardless of what first brought them to fame). What it takes to be a celebrity depends on the cultural context and the historical time. The advent of mass media increased the public interest in celebrities, and has even developed into a self-substantiating circuit. Some ordinary people volunteer to become known on television (e.g. in reality television shows) for a taste of celebrity.