How are intrinsic and extrinsic motivation different?

Intrinsic motivation arises from internal satisfaction, while extrinsic motivation arises from external rewards that is being obsessed by external things like money, prize etc. Like a man working in a firm just continue to work without enjoying it because of external motivation which is monthly payment, not the internal satisfaction.  

Difference between intrinsic and extrinsic motivation:

Motivation helps person to repeat activities for achieving something or internal peace. So there are two types of motivation here, intrinsic and extrinsic.