Answer:
I bind it and it walks. I loose it and it stops.
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
I follow the orders of only two. I respect the work of only two. I am in constant battles with many, Though one surpassed them all. With forces joined, We created hell, Until our mutual enemy fell. Who am I?
What has roots that nobody sees, and is taller than trees. Up, up it goes, and yet it never grows.
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.