A prostitute is a person, most of the time a woman, who has sex with people for money. Prostitution is sometimes called the "world's oldest profession". There are written records of it in almost every culture and society. In many countries it is a crime. In some places it is the customers who get arrested.
Prostitution is sometimes called the oldest profession or oldest occupation. A female prostitute is sometimes called a hooker, whore or ho. A male prostitute is sometimes called a gigolo. They can both be called a street walker, sex worker or escort. Customers or clients are sometimes called sugar mamas, stellas or janes if female. They are called johns if male.