audiologist vs otorhinolaryngologist

audiologist

noun
  • A healthcare professional who diagnoses, treats and/or manages hearing and balance disorders. 

otorhinolaryngologist

noun
  • A doctor specializing in otorhinolaryngology, the study of the ear, nose, and throat. 

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