Answer:
What falls down but is never injured?
An utensil used for bread. Also a paper cutter. Used by a thug to take a life, Or wielded by the tamest wife, When used to spread the butter.
I occur twice in eternity. And I'm always within sight.
A crafty use of long pieces of wool to make a scarf.
Where jewelry pierces your head.
What sphinxes employ and players enjoy.