We went to the cemetery to visit my aunt's 'grave'. [=to visit the place where my aunt's body is buried]
She took her secrets with her to the 'grave'. [=she died without telling anyone her secrets]
A hard life 'drove him to an early grave'. [=caused him to die when he was fairly young]
(..) to Isla de Muerta. You will spend the rest of the voyage contemplating all meanings of the phrase "silent as the grave." Do I make myself clear? Inescapably clear. Shiver me timbers. Cotton here says you missed a bit. (..)2003 Pirates of the Caribbean: The Curse of the Black Pearl