calefactor vs cooking

calefactor

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

cooking

noun
  • An instance of preparing food by using heat. 

  • The style or genre of food preparation. 

  • The process of preparing food by using heat. 

  • The cheapest available beer for sale in a public house; cooking bitter or cooking lager. 

  • One's ability to prepare food; cookery. 

adj
  • Cheap; better suited for use in recipes than drinking. 

  • Designed for culinary purposes 

  • In progress, happening. 

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