Answer:
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.
I will disappear every time you say my name. What am I?
I turn everything around but I cannot move. When you see me you see you!
With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?
I help engines spin and pants stay up
My days are numbered.