What am I?

As a stone inside a tree, I'll help your words outlive thee. But if you push me as I stand, the more I move the less I am. What am I?

related riddles

I can be red, blue, purple, and green. No one can reach me, not even the queen. What am I?

I have an eye but cannot see. I’m faster than any man alive and have no limbs. What am I?

what has hands but can't clap