what are two differences between friction and gravity?

Question

:] please help

Answer 1

friction is hot
gravity is cold

Answer 2

they are very similar...\
lets think of a feather and a ball dropping from the same structure, wind and everything the same (don't over-think this) what happens... they both hit the ground at the same time... in this example you are looking at both, friction (wind against the surface) and gravity(pulling down, equal force based on the mass of each object), the difference you ask for are also given in this example, don't over-think this.. go for it