Is gravity a force or an acceleration?

This sounds really stupid (especially from someone who got an A in Physics at A-Level), but I understand it as both. All mass has gravity. Therefore the huge mass of the earth exerts a force on us, pulling us into it. Gravity is therefore a force. We have weight due to gravity. This is equal to our mass... show more This sounds really stupid (especially from someone who got an A in Physics at A-Level), but I understand it as both.

All mass has gravity. Therefore the huge mass of the earth exerts a force on us, pulling us into it. Gravity is therefore a force.

We have weight due to gravity. This is equal to our mass multiplied by the acceleration due to gravity. BUT if you assume the Earth is not spinning, when we are standing on the ground, we are not accelerating towards the centre of the Earth.

Of course, the Earth is actually spinning, which creates centripetal force, and so we are accelerating towards the centre of the Earth. BUT the geometric poles (i.e. not magnetic poles) do not have any centripetal force, and yet gravity and weight still apply there. So is gravity the acceleration due to the Earth spinning? Or is that something else?
29 answers 29