Work = moving something

Force = the capability to do work

Power = the rate at which work can be accomplished

Torque is a Force, specifically a twisting force.

There are a lot of different types of force, but torque is the one generated by your engine or your power drill.

Horsepower is just a unit of power. Like millimeters and centimeters are unit of distance. Horsepower is Torque * RPM / 5252

1 Horsepower can do work (move something) at a rate of 33,000 lbs one foot per minute. You can algebra the shit out of this equation and it holds true. So 1 Horsepower does work at a rate of 1 lb 33,000 feet per minute. (Which is how those train commercials claim massive mileage on 1 gallon of fuel, deceitful bastards)

Don't however confuse horsepower as the ability to do work. It's not. Torque is the ability to do work. *If* you are capable (you have enough force to actually move something), power is the measurement of the rate you move it.

What am I saying? If we believe wikipedia, a human can produce about 0.1 HP steadily. So 0.1 hp does work at a rate of 3,300 lbs over 1 foot in 1 minute. So, can you squat your car?

I know I can't. The problem is that we can't apply enough force to actually move the car. When force is applied, but nothing moves, no work is done. Because work is 0, the rate of 0 work is 0, ie: power is 0.

Give us a system of pulleys to multiply our force, and we'd be able to move the car. Now that we're moving the car, we're doing work. The rate at which we're doing that work can be measured as our power.

The transmission in your tractor by the way, is equivalent to that system of pullies. Put your lawnmower engine behind a "short enough" 1st gear, and it would move your house. "Give me a lever long enough and I will move the world"