Physicists have very specific definitions for these words though and this exhibit demonstrates the difference between the two concepts.
Energy is the ability to do work while power is the rate at which work is done.
A hand generator is used to charge a set of capacitors to a given volltage. The capacitors then hold a given amount of energy. The capacitors can then be discharged through one of several different lightbulbs that vary in resistance. We'll be adding interesting info and links here.