clangour vs clatter

clangour

verb
  • To make a clanging sound. 

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

clatter

verb
  • To make a rattling sound. 

  • To hit; to smack. 

  • To chatter noisily or rapidly. 

noun
  • A rattling noise; a repetition of abrupt, sharp sounds. 

  • A loud disturbance. 

  • Noisy talk or chatter. 

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