auricle vs earhole

auricle

noun
  • Any appendage in the shape of an ear or earlobe. 

  • Synonym of atrium. 

  • The outer ear or pinna. 

  • An anterior ear-shaped appendage of the left or right atrium of the human heart. 

earhole

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

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

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

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