chanter vs crooner

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. 

crooner

noun
  • One who croons; a singer, usually male, especially of popular music. 

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