There is no electron cloud model. That's simply a descriptive term often used because electrons bound to an atom are a widely dispersed (compared to their classical radius) collection of small particles - like a cloud. Perhaps you mean electron shell model. The shell model represents an approximation to the Schrodinger Equation of low energy quantum mechanics in its modern form, while the Bohr model is a non-dynamic picture of the atom (a line-drawing really) intended to convey qualitative concepts of particle complementarity. It just happens to work for the hydrogen atom and nothing else. It predates the consistent quantum wave mechanics of modern quantum theory.