maw vs nostril

maw

noun
  • The mouth. 

  • Mother. 

  • Any large, insatiable or perilous opening. 

  • Appetite; inclination. 

  • A gull. 

  • The upper digestive tract (where food enters the body), especially the mouth and jaws of a fearsome and ravenous creature. 

nostril

noun
  • Either of the two orifices located on the nose (or on the beak of a bird); used as a passage for air and other gases to travel the nasal passages. 

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