Changing from one thing to another, like turning a light on or off, or changing from one TV show to another.
Switching is usually quick and simple. It can also mean changing your mind or changing your plans.
Examples:
I am switching the light on.
She is switching from one TV show to another.
They are switching their plans for the weekend.
We are switching the red and blue colors.
The switching of the lights was very fast.
He is switching his mind about the game.