cronk vs rales

cronk

noun
  • The honking sound of a goose. 

  • A hill or barrow. 

verb
  • To honk like a goose. 

rales

noun
  • Abnormal clicking, rattling or crackling sound heard from the lungs, often audible only with a stethoscope. 

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