raqs/raks - dance (in the Arabic script it's represented with rqs, of course in their equivalemt)
raqasa/rakasa - female dancer - raqsa in writing
raqas/rakas - male dancer -raqs in writing.

whether they're written with q or k almost doesn't mather, because it's phonetic, but in my opinion q is better becase it's eqivalent looks like a q sort of anyways, and there's another k sound which can be represented by k.

as far as dialects - they are pronouned slightly differently depending on the area / dialect, for example in Egyptian the q is not pronounced, and in others different syllables are accented.

What she said. :) I was commenting on the Arabic script and spelling for the original poster.

Marianna, we'll just keep tag teaming this reply!