Is heavier bodies fall faster than lighter ones
The two stones will accelerate at the same rate due to gravity. This is usually attributed to Galileo although it was known before that - eg. John Dee was aware of it and didn't think it a new revelation.

So if the two stones have the same shape and size - ie. so aerodynamic effects are identical, they will fall at the same acceleration and speed.
There are plenty of experiments to demonstrate this, but perhaps one of the most well known was by one of the Apollo astronauts (the Moon being essentially airless has no aerodynamic effects).  The result can also be derived from Newton's Inverse Square Law of Gravity and his Second Law of Motion.

If I were you, I would forget about Aristotle when it comes to trying to understand the world around us. He didn't have any concept of forces, inertia, and momentum as we would understand it today. His concept of forces was provably wrong with knowledge available to him at the time.