Page "Draugr" Paragraph 15

A variation of the draugr is the haugbui.

The haugbui ( from the Old Norse word haugr meaning " howe " or " barrow ") was a mound-dweller, the dead body living on within its tomb.

The notable difference between the two was that the haugbui is unable to leave its grave site and only attacks those that trespass upon their territory.