black pudding vs forcemeat

black pudding

noun
  • A blood sausage made from pork blood, a high proportion of cereal (oats or barley), and spices; eaten at breakfast and combined in starters and salads. 

forcemeat

noun
  • An emulsion of fat and comminuted meat (which has been subject to puréeing, grinding, sieving, chopping finely) optionally mixed with other flavour carriers and either served up alone or used as a stuffing. 

How often have the words black pudding and forcemeat occurred in a corpus of books? (source: Google Ngram Viewer )