I your other thread about this, I explained it this way,
Say you got to push your car into the garage, the force applied to the car is basically torque and the foot steps you take are basically rpm, it takes both to move the car you can push on it all day long but until you take a step a your is going nowhere. Pushing and foots steps equals power and power is what's needed to move your car.
Same with an engine torque is a power stroke (pushing), hp is all the power strokes over time in this case time is rpms (steps).