Burial Vault, also known as a grave liner, is a container for caskets and is designed to protect them from the elements. There are several different synonyms for burial vaults, including grave liners, burial containers, burial caskets, burial receptacles, and crypts. While these synonyms differ slightly in their exact meanings, they all refer to containers that are used to protect caskets and their contents. When selecting a burial vault, it is important to consider the needs of the individual and the requirements of the cemetery. Some factors that may influence the selection of a burial vault include cost, durability, and the specific regulations of the cemetery.