A sex worker is a person who works in the sex industry.

The term is used in reference to all those in all areas of the sex industry including those who provide direct sexual services as well as the staff of such industries. 

Some sex workers are paid to engage in sexually explicit behavior which involve varying degrees of physical contact with clients (prostitutes, escorts, some but not all professional dominants); 

pornography models and actors engage in sexually explicit behavior which are filmed or photographed. 

Phone sex operators have sexually-oriented conversations with clients, and do auditive sexual roleplay. 

Other sex workers are paid to engage in live sexual performance, such as web cam sex and performers in live sex shows. 

Some sex workers perform erotic dances and other acts for an audience (striptease, Go-Go dancing, lap dancing, Neo-burlesque, and peep shows).

Thus, although the term is sometimes viewed as a synonym or euphemism for prostitute, it is more general. 

Some people use the term to avoid invoking the stigma associated with the word prostitute.



Article taken from wikipedia