Power is the rate at which work is done or energy is transferred. It measures how quickly a task can be completed.
Work: Work is the transfer of energy that occurs when a force acts on an object and displaces it in the direction of the force.
Energy: Energy is the ability to do work or cause change. It exists in different forms such as kinetic, potential, and thermal energy.
Efficiency measures how effectively input energy is converted into useful output energy. It's calculated by dividing useful output energy by total input energy and multiplying by 100%.