What is intrinsic and extrinsic rewards?

An intrinsic reward is an intangible award of recognition or a sense of achievement motivation, in any endeavor when one feels in the Maslows hierarchy as attainment in conscious satisfaction. It is the knowledge that one did something right, or one made some body's day better.

An extrinsic reward is an award that is tangible or physically given to you for accomplishing something as recognition of ones endeavor.