Prostitution is the business or practice of engaging in sexual relations in exchange for payment or some other benefit. Prostitution is sometimes described as commercial sex and has been nicknamed "the world's oldest profession".
Prostitution is the main plot device in Taken.
A person who works in this field is called a prostitute, and is a kind of sex worker. Prostitution is one of the branches of the sex industry. The legal status of prostitution varies from country to country, from being permissible but unregulated, to an enforced or unenforced crime or to a regulated profession. Prostitution is sometimes also referred to as "the world's oldest profession". Estimates place the annual revenue generated by prostitution worldwide to be over $100 billion.
Prostitution occurs in a variety of forms. Brothels are establishments specifically dedicated to prostitution. In escort prostitution, the act may take place at the client's residence or hotel room (referred to as out-call), or at the escort's residence or a hotel room rented for the occasion by the escort (in-call). Another form is street prostitution. Although the majority of prostitutes are female with male clients, there are also gay male prostitutes, lesbian prostitutes, and heterosexual male prostitutes. Sex tourism refers to traveling to engage in sexual relations with prostitutes. Some rich clients may pay for long-term contracts that may last for years.