potjie vs stewpot

potjie

noun
  • A lidded round-bottomed pot used for cooking in South Africa. 

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 potjie and stewpot occurred in a corpus of books? (source: Google Ngram Viewer )