churr vs woof

churr

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

noun
  • A low vocal sound made by some birds. 

woof

verb
  • To make a woof sound. 

  • To devour; to gobble; to eat (something) voraciously. 

intj
  • Expression of strong physical attraction for someone. 

  • The sound of a dog barking. 

noun
  • A fabric; the texture of a fabric. 

  • The set of yarns placed crosswise in a loom, interlaced with the warp, carried by the shuttle; weft. 

  • The sound a dog makes when barking. 

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