chinking vs rales

chinking

noun
  • The sound of something that chinks. 

  • The material used to fill the spaces between logs in a log house; caulking. 

rales

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

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