The terms "call girl" and "escort" are often used interchangeably, but they can have different meanings depending on the context and the region.

In general, a call girl is a sex worker who is hired by clients to provide sexual services, typically for a short period of time. The term "call girl" often implies that the sex worker is contacted by clients via phone or online, and may meet them in a private location such as a hotel room or apartment. Call girls may work independently or as part of an agency, and they may offer a range of services, from sexual acts to companionship and conversation.