cronk vs klaxon

cronk

verb
  • To honk like a goose. 

noun
  • A hill or barrow. 

  • The honking sound of a goose. 

klaxon

verb
  • To produce a loud, siren-like wail. 

noun
  • A loud electric alarm or horn. 

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