eli5: What (if any) is the difference between an engine and a motor?

Question

I’ve heard these words used interchangeably over the years, with engine being more prevalent. Is there any difference? Why is a small gas-driven device like a lawnmower commonly said to have a motor, while what is under the hood of a car is almost always referred to as an engine?

In: 160

Answer 1

I have worked with hydraulic motors, electric motors, and pneumatic motors. The power is made somewhere else at the end of wires, or pipes, or hoses…

An engine makes its own power right next to the output shaft. A lot of people can call an engine a motor, but…that does not make it a motor.