Fantastic! A suspension is not stable. If you leave it undisturbed, the solute and the solvent separate themselves.
So, if you have a suspension and you want to separate the two components, you just leave the suspension undisturbed for some time. The heavier material will settle down at the bottom, and the solute and solvent get separated. This process is called filtration.
If you take milk and add water to it, will the mixture be homogeneous (uniform) or heterogeneous (non-uniform)?