Answer:
Runs smoother than any rhyme, loves to fall but cannot climb.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?
What hangs others yet can unintentionally hang itself?
Bright as diamonds, Loud as thunder, Never still, A thing of wonder.
I wear a red robe, with staff in hand, and a stone in my throat.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.