barbecue vs calefactor

barbecue

noun
  • A fireplace or pit for grilling food, typically used outdoors and traditionally employing hot charcoal as the heating medium. 

  • A floor on which coffee beans are sun-dried. 

  • Meat, especially pork or beef, which has been cooked in such an apparatus (i.e. smoked over indirect heat from high-smoke fuels) and then chopped up or shredded. 

  • A meal or event highlighted by food cooked in such an apparatus. 

verb
  • To cook food on a barbecue; to smoke it over indirect heat from high-smoke fuels. 

  • To grill. 

calefactor

noun
  • A heater; one who, or that which, makes hot, such as a stove, etc. 

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