Answer:
The day is their night and the night is their day, when I shout and they shout back I run away.
What is yours but only used by others?
A tower at the root of all confusion.
It can be done to buttons and shopping carts. What is it?
Mountains will crumble and temples will fall, and no man can survive its endless call. What is it?
What language does a billboard speak?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?