Answer:
Passed from father to son and shared between brothers, its importance is unquestioned though it is used more by others.
How can you throw a ball as hard as you can, to only have it come back to you, even if it doesn’t bounce off anything?
What can be measured but has no length, width or height?
What goes up and down the stairs without moving?
What instrument plays from the heart?
What language does a billboard speak?
Easy
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?