heat sink vs warmer

heat sink

noun
  • A material capable of absorbing heat. 

  • An object, system or environment that absorbs and dissipates heat from objects in thermal contact (either direct or radiant) with it. 

  • A place toward which the heat moves in a system. 

warmer

noun
  • Something that warms, such as a heater or a soup. 

  • An introductory activity, for example in a lesson, to stimulate interest in a topic. 

  • A piece of clothing for warmth, such as a bodywarmer or leg warmer. 

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