canto vs pericope

canto

noun
  • One of the chief divisions of a long poem; a book. 

  • The treble or leading melody. 

  • The designated division of a song. 

pericope

noun
  • A section of text forming a coherent thought, suitable for use in a speech. 

  • A passage of Scripture to be read in public worship or a book containing such passages. 

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