bird's nest vs fuzz

bird's nest

noun
  • Any tangle of fibers resembling a typical nest of a bird. 

  • A structure built by a bird as a place to incubate eggs and rear young. 

  • Any of several plants having some resemblance to the typical nest of a bird, eg, wild carrot (Dauca carota) 

fuzz

noun
  • A frizzy mass of hair or fibre. 

  • Quality of an image that is unclear; a blurred image. 

  • A distorted sound, especially from an electric guitar or other amplified instrument. 

  • The police, or any law enforcement agency. 

  • A state of befuddlement. 

  • The random data used in fuzz testing. 

verb
  • To make fuzzy. 

  • To become fuzzy. 

  • To test a software component by running it on randomly generated input. 

How often have the words bird's nest and fuzz occurred in a corpus of books? (source: Google Ngram Viewer )