churr vs clatter

churr

verb
  • To make the low vocal sound of some birds. 

noun
  • A low vocal sound made by some birds. 

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 churr and clatter occurred in a corpus of books? (source: Google Ngram Viewer )