I'd suggest to Muskan to buy a dictionary and pay attention when reading. As Acheron, Ozme and others have stated through out this thread the OP has serious problems identifying the difference with the terms.
This difference is not determined by ownership or lack there of, as assumed by the OP. The difference is defined by money exchange in the case of a prostitute, whore being the colloquial term.

I think it's extremely insulting to mix the 2 concepts, not to mention lacking in basic manners to address a BDSM community with that much clumsy naivety.