Not much difference in sound, a little but not something a beginner is going to notice and, as Liam rightly points out, other factors have way more impact on the sound.
Back in the days when you could still get really good ebony it tended to be tighter grained, smoother, and harder than rosewood - and therefore a different feel and lending itself to string bending a little more smoothly like hard maple - but finding that kind of ebony is pretty rare these days.