Usage patterns
〈人〉が墓に入るfor someone to be laid to rest (buried) in a grave
My grandfather is buried in this grave.
墓を建てるto build/erect a grave
After my father's death, the family built a new grave.
墓に花を供えるto offer flowers at a grave
Every year during Obon, we offer flowers at the grave.
墓の前で手を合わせるto press one's hands together in prayer in front of a grave
He pressed his hands together and prayed in front of the grave.
墓を掃除するto clean a grave
During Higan, the family cleaned the grave together.
Expressions
墓に布団は着せられぬyou can't put a futon on a grave; it's too late to show filial piety after your parents are dead