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 am heavy forward, but backward I'm not. What am I?
I go up and never come down no matter how hard you wish. As I get higher more wrinkles crawl onto your face.
What is so fragile that saying its name breaks it?
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
What age most travelers have?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic