Answer:
What gets sharper the more you use it?
I am enjoyed by some, despised by others. Some take me for granted, some treasure me like a gift. I last forever, unless you break me first. What am I?
kings and queens may cling to power and the jesters may have their call. I am the most common but I can rule them all.
I will disappear every time you say my name.
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.