Answer:
They are two brothers. However much they run, they do not reach each other.
What is yours but only used by others?
An art-form and its colour-ful result.
The more you look at it, The less you see.
Sheets of paper that tell new stories each day.
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?