The funeral usually includes a ritual through which the corpse of the deceased is given up.[2] Depending on culture and religion, these can involve either the destruction of the body (for example, by cremation or sky burial) or its preservation (for example, by mummification or interment). Differing beliefs about cleanliness and the relationship between body and soul are reflected in funerary practices. When a funerary ceremony is performed but the body of the deceased is not available, it is usually called a memorial service.