Generally speaking, elastic force refers to the elastic force produced by the stretching or compression deformation of a spring and the elastic force produced by the mutual extrusion between objects (middle school stage), and in college it refers to the elastic force produced by torsion.

Let's take the situation in middle school as an example.

In middle school, force is the interaction between objects. For a force, there is an object to exert force and an object to bear force.

Example 1: a light spring placed vertically, with a small ball at the upper end, and the whole device is static.

The ball is subjected to gravity and elasticity F 1. For the elastic force F 1, the object of force is a spring and the object of force is a ball. The point of action of the force is on the stressed object.

Ex. 2: A wooden box stands quietly on a rough slope.

The wooden box bears gravity, elastic force (supporting force) n and static friction.

For elastic force n, the applied object is an inclined plane, and the stressed object is a wooden box.