chanter vs vox

chanter

noun
  • One who chants or sings. 

  • The pipe of a bagpipe on which the melody is played. 

  • A priest who sings in a chantry. 

  • The hedge sparrow. 

vox

noun
  • The voice, especially one's singing voice; vocals. 

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