磨

First grind the seal stone flat, then engrave the characters on it.

grind a lens

grind/sharpen/whet a pair of scissors

polish marble

Holes are worn into the soles.

I have calluses on my hands.

The heels of my shoes pinch.

His hands were blistered from rubbing.

wear a hole/groove (in sth)

rub off the rough edges

will endure for centuries

waste time

The illness has worn her mother down to a mere shadow of her former self.

wear out the sharp edges and corners; wear down one's horns after suffering repeated setbacks

I was stuck with my sister for the whole day.

He kept plaguing me and I could not get away.

tiresomely pursue or pester sb (for sth)

worry sb for sth