double boiler vs hodgepodge

double boiler

noun
  • A pair of interlocking pots, the lower one filled with water which when boiling heats the contents of the upper pot. 

  • A large pan containing hot water, into which other smaller pans are set in order to cook food at low heat (below the boiling point) or to keep food warm. 

hodgepodge

noun
  • A confused mass of ingredients shaken or mixed together in the same pot. 

  • A collection containing a variety of miscellaneous things. 

verb
  • To move or position in an erratic, disorganised manner. 

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