Answer:
What can you never get rid of when you lose it?
What has only two words, but thousands of letters?
Rotten trees and Jack-O-Lanterns have this characteristic in common.
It is in every mountain, it's not in any hill, it's not in all the world, and yet it's in the mill.
What is something that can go up quite easily, but is not as easy to bring back down?
What has wheels and flies but is not an aircraft?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?