The principal quantum number \((n)\) determines the energy of an orbital as well as the size of the orbital; the azimuthal (subsidiary or angular momentum) quantum number divides the shell into orbits or orbital, it also describes the shape of the orbital. The magnetic quantum number gives the number of spatial orientations or degeneracy of the orbitals in subshells.
The spin quantum number describes the spinning of an electron in either clockwise or anticlockwise direction; it limits the number of electrons that can be accommodated by an orbital to two.