broth vs feedstock

broth

noun
  • Water in which food (meat or vegetable etc) has been boiled. 

  • A soup made from broth and other ingredients such as vegetables, herbs or diced meat. 

feedstock

noun
  • Any bulk raw material constituting the principal input for an industrial process. 

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