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Friction is an opposing force. It is responsible for wear and tear of two bodies.The 4 types of friction are - rolling, static, kinetic and fluid.

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the force acting on 2 surfaces in contact which opposes the motion of one body over the other is called the force of friction.
                             types of friction
kinetic friction
rolling friction
static friction
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It is a force which opposes the motion of an object.There are many types of friction some of them are:
fluid friction
lubricated fiction 
kinetic friction 
static friction
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