Horsepower is the measure of an engine's ability to deliver power at a given engine speed.
The maximum amount of force produced at a specific speed. The magnitude of a torque is equal to the magnitude of the applied force multiplied by the distance between the object's axis of rotation and the point where the force is applied. In many ways, torque is the rotational analogue to force. Just as a force applied to an object tends to change the linear rate of motion of the object, a torque applied to an object tends to change the object's rate of rotational motion. For equilibrium, all the horizontal components of the force must cancel one another, and all the vertical components must cancel one another as well.