Answer:
Do you know what you can hold without ever touching it?
Two brothers we are, great burdens we bear. All day we are bitterly pressed. Yet this I will say, we are full all the day, and empty when go to rest.
We are five little objects of an everyday sort, You will find us all in a tennis court.
Held firmly in the hands, like a sword it cuts deep. Bloodless strokes, all, then forward we leap.
What can be heard and caught but never seen?
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?