What is the term for a stone with an inscription used to mark a grave?

The correct term for a stone with an inscription used to mark a grave is a gravestone. Gravestones serve as a marker for a burial site, typically displaying the deceased's name, dates of birth and death, and sometimes additional inscriptions or symbols that reflect the individual's life or beliefs. This stone serves both as a memorial for the deceased and a means for visitors to identify the grave.

Footstones, while they are another type of grave marker, are typically smaller stones placed at the foot of the grave and do not generally contain inscriptions like gravestones do. An epitaph refers specifically to the inscription itself rather than to the stone that bears it. Monuments are larger structures that may encompass various elements, potentially including a gravestone, but are not limited to individual graves and can signify larger memorial sites or historic events. Thus, the term gravestone is the most accurate for describing a stone that is inscribed and specifically marks a grave.