[gricardo99]

That's right, the forces cancel each other out, so that's "zero-g".

If you're accelerating, you're experience some "g" force, not "zero-g".

[chrischen]

I’m sitting on the toilet right now, and the forces are canceling each other out so that I’m not sitting in the toilet. Is this 0g?

[sandworm101]

Except acceleration due to gravity. Freefall is acceleration without feeling any apparent force.