earhole vs listener

earhole

noun
  • The outer aperture of the ear; the entrance to the ear canal. 

  • A puncture in the ear, usually in the earlobe, such as for earrings. 

  • An opening in a head-covering, such as a hat or helmet, for the ears. 

listener

noun
  • A person's ear. 

  • Someone who listens, especially to a speech or a broadcast. 

  • A musical anthology. 

  • A function that runs in response to an event; an event handler. 

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