Answer:
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground. It holds pale gems of blue.
Who is he that runs without a leg. And his house on his back?
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.
Look into my face and I'm everybody. Scratch my back and I'm nobody.
Double my number, I'm less than a score. Half of my number is less than four. Add one to my double when bakers are near. Days of the week are still greater, I fear.
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?