Answer:
What building has the most stories?
I am a fire's best friend. When fat, my body fills with wind. When pushed to thin, through my nose I blow. Then you can watch the embers glow.
I hide but my head is outside.
Give it food and it will live, give it water and it will die.
Iβm a word, six letters longΝΎ I sometimes enter with a gong. All in order from A to Z, I start with the letter B. What is the word?
You use it between your head and your toes, the more it works the thinner it grows.