Question

Difference between static and sliding friction

Answer 1

static friction=force that exists between two bodies so long as they r relatively at rest, even though an external force is acting upon them.
sliding friction=the force of friction acting between two bodies when they when they slide on each other with a uniform speed

Answer 2

static friction : The friction between two bodies which are in contact which each other and at rest is called static friction.

sliding friction : The friction between two bodies which is contact with each other and also at sliding over each other is called sliding friction.