Incentive i Encouragement - różnica

Czy jest jakaś różnica między słowami: incentive i encouragement? Można je stosować zamiennie? Obydwa oznaczają "zachętę".

NIE, to sa 2 inne slowa
He encouraged her to work well.
*He incentivised her to work well.
His encouragements was all I needed to pass my driving test.
His incentive was all I needed....?

when something is incentive it works like a stimulus for something else to happen