What term is used for someone engaged in sexual activities for payment?

The term "prostitute" specifically refers to an individual who engages in sexual activities in exchange for payment. This definition is widely recognized in both legal and social contexts. Prostitution is often characterized by the direct transaction of sexual services for monetary compensation, highlighting the nature of the relationship as financially motivated.

In contrast, while "escort" can imply a professional who may accompany someone for social purposes and may also be involved in sexual activities, this term lacks the explicit reference to payment for sexual services. "Companion" generally describes a person who accompanies another for companionship or support but does not inherently include sexual connotations or transactions. The term "solicitor" typically refers to someone who seeks business or services, often in a legal context, and does not relate to sexual activities.

Thus, the choice of "prostitute" accurately captures the essence of the person involved in sexual activities for payment, distinguishing their role clearly from the nuances associated with the other terms.