churr vs quirk

churr

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

noun
  • A low vocal sound made by some birds. 

quirk

verb
  • To furnish with a quirk or channel. 

  • To (cause to) move with a wry jerk. 

noun
  • An acute angle dividing a molding; a groove that runs lengthwise between the upper part of a moulding and a soffit. 

  • An idiosyncrasy; a slight glitch, mannerism; something unusual about the manner or style of something or someone. 

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