Answer:
Used left or right I get to travel over cobblestone or gravel. Used up I vie for sweet success used down I cause men great duress.
I hold two people together but touch only one. What am I?
What is black when you buy it, red when you use it, and gray when you throw it away?
You can see me in water, but I never get wet. What am I?
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?