pharynx vs rostrum

pharynx

noun
  • The part of the alimentary canal and respiratory tract that extends from the back of the mouth and nasal cavity to the larynx and esophagus. 

  • The part of the alimentary canal immediately behind the mouth in invertebrates that may be thickened and muscular, eversible and toothed, or adapted as a suctorial organ. 

rostrum

noun
  • The oral or nasal region of a human used for anatomical location (i.e. rostral) 

  • A dais, pulpit, or similar platform for a speaker, conductor, or other performer. 

  • A platform for a film or television camera. 

  • The projecting prow of a rowed warship, such as a trireme. 

  • The beak-shaped projection on the head of insects such as weevils. 

  • The snout of a dolphin. 

  • The beak. 

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