GRAVE

A dream featuring a grave suggests that you are suppressing or have lost your emotions or feelings in some area of your life, or that you are suppressing your character or personality in some way. Alternatively, the dream may reflect the recent loss of someone in your life. 

If you push someone into a grave then it implies that you have built up negative emotions about something or someone, while to to dig a grave suggests that you are looking for closure in some part of you life, or you feel uneasy or nervous about something.