cronk vs girn

cronk

verb
  • To honk like a goose. 

noun
  • A hill or barrow. 

  • The honking sound of a goose. 

girn

verb
  • To grimace; to snarl. 

  • To make elaborate unnatural and distorted faces as a form of amusement or in a girning competition. 

  • To whinge, moan, complain. 

noun
  • A vocalization similar to a cat's purring. 

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