What criteria separates a planet from a dwarf planet?
objects obeying the definition of IAU 2006 is planets.
Other bodies can not be called plantes. Image result for IAU definition of planets
A: A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.\
defnition IAU from wikipedia.