Answer:
As a stone inside a tree, Iβll help your words outlive thee. But if you push me as I stand, the more I move the less I am.
The person who makes me doesn't need me. The person who buys me doesn't use me. The person who uses me doesn't know it. What am I?
I have three feet but no arms or legs
I have no life but I can die. What am I?
I can climb mountains, cross streams, handle hundreds of feet each day, yet I never move. What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?