system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: How is engine power different from torque qualitatively? And why is a diesel engine better than petrol at low rpms?

Eli20 works as well!
gpt
torque = force but rotational

rpm = speed but rotational

power = speed \* force = work per unit time = (force\*distance) per unit time = torque \* rpm

You can have all the torque you want from an engine if you're willing to cope with imperceptible motion. Similarly you can have all the speed you want if you can cope with it stopping when you look at it the wrong way. This makes them sound useless but there are actually uses for the extreme ends of both of those. A projector can use high speed, but doesn't need to be all that strong to move the film to produce a moving image.