碾磨

碾磨	niǎn mó	to mill / to grind / grinding stone
碾	niǎn	stone roller / roller and millstone / to grind / to crush / to husk
磨	mó	to rub / to grind / to polish / to sharpen / to wear down / to die out / to waste time / to pester / to insist
磨	mò	grindstone / to grind / to turn round