Answer:
It can pierce the best armor and make swords crumble with a rub, yet for all its power It can't harm a wooden club.
What can be forever wound up but never annoyed?
By the way, what never moves, wears shoes, sandals and boots, but has no feet?
They can be harbored, but few hold water. You can nurse them, but only by holding them against someone else. You can carry them, but not with your arms. You can bury them, but not in the earth.
You can hold it without using your hands or arms. What is it?
I can only be played on a windy day