slow cooker vs stewpot

slow cooker

noun
  • A kitchen appliance consisting of a clay pot and its housing with self-contained electrical heating, characterized by a loose-fitting lid, relatively low temperatures, and long cooking times, and used especially in the preparation of stews. 

stewpot

noun
  • A pot used for making stew, usually large and heavy. 

  • A jumble, especially one that lacks intellectual coherence. 

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