Dancing and Escorting

I had heard one time about a dancer who was doing some escorting on the side, under-the-radar. Are those two different things or is it a distinction without a difference? If the dancer is lining up some escorting dates on the side by word of mouth and not placing any ads, is that the same as setting up OTC action? If it is an escort gig, does that mean that it is an hour of time with multiple shots on goal, while a dancer comes over and dances until you pop and then she leaves? Does an escort not dance, but a stripper can dance during the session? If you run across a dancer that also escorts, which would be better to arrange?