Here's a breakdown:
* Elasticity: The ability of a material to return to its original shape after being stretched or compressed.
* Elastic force: The force that resists the deformation of the material. This force is proportional to the amount of deformation (Hooke's Law).
Think of a rubber band:
* Stretching: When you stretch a rubber band, it resists the stretching force.
* Compression: If you compress a rubber band, it resists the compression force.
In both cases, the rubber band exhibits elasticity. It stores the applied force as potential energy and returns to its original shape once the force is removed.