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]
(..) I wish you'd go away. If you had any raising you'd know I never want to see you again. Now, why be silly? You've no reason for hating me. I'll carry your guilty secret to my grave. I guess I'd be very unpatriotic to hate one of the great heroes of the war. I do declare I was surprised to see (..)1939 Gone with the Wind