brood sow vs grunter

brood sow

noun
  • A female pig kept for breeding. 

  • A woman raising children. 

grunter

noun
  • A pig. 

  • One who grunts. 

  • Any of a group of fish of the family Terapontidae, which make a grunting sound when caught. 

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