The main difference between the two models is <em>the position of the electron in the atom</em>.
Explanation:
<em>Bohr model:</em> The electrons are moved around the nucleus in circular definite paths (orbitals or shells). Also, he could not find or detect the exact position of electron.
<em>Electron cloud model:</em> It is supposed by Erwin Schrodinger. He showed that the emission spectra of the atom is the way to detect the probability of electron position.
Answer: The main difference is about the certainty of the location of an electron.
Explanation:
The cloud model describe an energy level as region where the likelihood of finding an electron is high.
While the Bohr model describes an energy level as the movement of electron around nucleus of an atom, using the movement of the planets around the sun as an analogy.
