Resurrectionist is just a more appropriate name for body snatching. This is exactly what these people did. But don’t worry these people weren’t cannibals or anything. Resurrectionist was an illegal job but was done for a relatively noble purpose: to sell bodies to medical teaching centers. In the 18th century, medical science was progressing by leaps and bounds, getting anatomy was as easy as it is now.
Many learning centers employed resurrectionist to steal bodies from graveyards. The problem had become so common that in the 18th century many graveyards had night time patrol. Rich people had their loved ones buried in private property in order to avoid body snatching.