inner ear vs otolaryngology

inner ear

noun
  • Mind's ear. 

  • The portion of the ear located within the temporal bone which includes the semicircular canals, vestibule, and cochlea and is responsible for hearing and balance. 

otolaryngology

noun
  • The study of diseases of the ear, nose and throat. 

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