Taken from the American Heritage® Dictionary of the English Language;
Motor:
1. Something, such as a machine or an engine, that produces or imparts motion.
2. A device that converts any form of energy into mechanical energy, especially an internal-combustion engine or an arrangement of coils and magnets that converts electric current into mechanical power.
3. A motor vehicle, especially an automobile: “It was a night of lovers. All along the highway... motors were parked and dim figures were clasped in revery” (Sinclair Lewis).
Engine:
1. A machine that converts energy into mechanical force or motion.
2. Such a machine distinguished from an electric, spring-driven, or hydraulic motor by its use of a fuel.
1. A mechanical appliance, instrument, or tool: engines of war.
2. An agent, instrument, or means of accomplishment.
