hibachi vs radiator

hibachi

noun
  • A portable brazier, powered by charcoal, used for cooking. 

  • A cooking method and performance art in which the chef grills pieces of food on a hot metal griddle in front of the guests; teppanyaki. This terminology is virtually unknown in Japan. 

  • The griddle used in such cuisine; teppan. 

radiator

noun
  • A finned metal fixture that carries hot water or steam in order to heat a room. 

  • A type of antenna. 

  • Anything which radiates or emits rays. 

  • A device that lowers engine coolant temperature by conducting heat to the air, through metal fins. 

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