Prostitution involves engaging in sexual relations in exchange for payment, with a person in this field called a prostitute. It is considered a type of sex work and branch of the sex industry, where promiscuous sexual relations are the business or practice in exchange for money or other valuables.

1. Prostitution is the business or practice
of engaging in sexual relations,
especially in a promiscuous way,in
exchange for payment in money or
other things of value. 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.