Torque and work both are defined as force timTorque and work both are defined as force times the distance, then how do they differ?es the distance, then how do they differ?

Torque:
Change in rotational motion is apparently produced by torque. And torque is eventually produced by two equal and opposite forces. 
Torque is equal to the product of one force and the perpendicular distance between two forces.
Work:
When the force acting on a body displaces the body, work is said to be done. The body can be displaced by only single force.   
Work is equal to the product of displacement and component of force in the direction of displacement.

Torque is a vector quantity while work is a scalar.