clangour vs clonk

clangour

verb
  • To make a clanging sound. 

noun
  • A loud, repeating clanging sound; a loud racket; a din. 

clonk

verb
  • To make such a sound. 

noun
  • A stick-like tool used to strike the surface of the water and produce a sound that causes nearby fish to attack the bait. 

  • The abrupt sound of two hard objects coming into contact. 

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