Answer:
Defends your noggin from the hard pavement
It is in every mountain, it's not in any hill, it's not in all the world, and yet it's in the mill.
In your fire you hear me scream! Creaking and whining yet I am dead before you lay me in your hearth.
What word is always pronounced wrong?
Its days are numbered.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.