A force is a push or pulls on an object caused by the interaction of the thing with another object.
Every time two things interact, a force is exerted on each of them.
Repulsion force is defined as any force that causes two things to repel each other. When discussing different issues, the concept of repelling force changes. But, at its foundation, we must recognize that one thing repels another.
Let's have a look at the repelling force in electrostatics. We have charges that might be positive or negative in nature. The repulsive force is the force that acts between similar charges.
Two positive charges repel each other and two negative charges repel each other while one positive and one negative attract each other