* Potential energy is stored energy due to an object's position or state.

* Kinetic energy is the energy of motion.

The milk in the glass has potential energy due to its:

* Gravitational potential energy: The milk is held above the ground, so it has the potential to fall and release energy.

* Chemical potential energy: The milk contains chemical bonds that store energy, which can be released through chemical reactions (like digestion).

The milk is not moving, so it doesn't have kinetic energy.