churr vs yammer

churr

noun
  • A low vocal sound made by some birds. 

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

yammer

noun
  • A loud noise. 

  • One who yammers. 

  • The act or noise of yammering. 

verb
  • To complain peevishly. 

  • To repeat on and on, usually loudly or in complaint. 

  • To make an outcry; to clamor. 

  • To talk loudly and persistently. 

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