* Potential Energy: Energy stored due to an object's position or configuration. The stretched rubber band has the potential to do work because it's been deformed from its resting state.

* Kinetic Energy: Energy of motion. A rubber band at rest isn't moving, so it doesn't have kinetic energy.

Think of it like this:

* Stretched rubber band: Like a coiled spring, it's storing energy waiting to be released.

* Released rubber band: The potential energy is converted into kinetic energy as it flies back to its original shape.