Centrifugal force is a force pulling outward on a rotating body.
A vehicle turning a curve is a similar system to this rotating body, so it is subject to centrifugal force too. Centrifugal force resists turning, and tries to keep the vehicle moving in a straight line. Centrifugal force is also the force that causes an out-of-balance wheel to vibrate.
Centrifugal force can also be useful. When coolant enters the center of this pump, and the rotor spins, centrifugal force moves the liquid outward.