I, for one, believe that the name "black hole" is more litteral than that. You have a large amount of mass in a tiny area with nothing left to stop its contraction. Logic would dictate that it go on shrinking indefinitely (and accelerating inwards as its gravity becomes more concentrated) until it fills no space at all, leaving behind nothing but a bottomless pit in spacetime that would be observed as an inescapable mass, regardless of whether or not any actual substance remained.
So, to me atleast, a black ole is a perfect void.
Yes, Acceleration was just a typo.
Various updates have been added such as Dissipation Shield blocking spells (though being less effective) and Bones not bloking ranged.