When a body slides on the surface of another body, the frictional force exerted by the surface is called the sliding friction. Example: The resistive force encountered while sliding a table over a smooth floor. After the body just starts to slide on a surface (external force exceeds the limiting force of static friction), the force required to maintain the motion of the body over the other surface with a uniform velocity is a measure of dynamic or sliding friction.
The frictional force that exist between two surfaces when there is a relative motion between them is called dynamic or sliding friction. Another example is sliding over ice.
