Answer:
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
My first is nothing but a nameอพ my second is more smallอพ my whole is of so little fame it has no name at all.
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
Jack and Jill when up the hill jack fell down
I go around in circles, but always straight ahead. Never complain, no matter where I am led.
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?