Here's a breakdown:

* Magnets have poles: Magnets have two poles, a north pole and a south pole.

* Like poles repel: When you bring two north poles or two south poles together, they will push each other away. This is called repulsion.

* Opposite poles attract: When you bring a north pole and a south pole together, they will pull each other closer. This is called attraction.

So, the force pushing two magnets apart is the magnetic force of repulsion occurring between like poles.