chest freezer vs refrigerator

chest freezer

noun
  • A long, low freezer that is opened from above, as opposed to the vertical kind with a front-facing door. 

refrigerator

noun
  • A household appliance used for keeping food fresh by refrigeration (short form fridge). 

  • One who has a chilling influence. 

  • A similar device used to keep non-food items cold, such as blood, photographic film, drugs, or pharmaceuticals like insulin. 

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