communion vs harmony

communion

noun
  • A joining together of minds or spirits; a mental connection. 

  • A form of ecclesiastical unity between the Roman Church and another, so that the latter is considered part of the former. 

  • Holy Communion. 

harmony

noun
  • A pleasing combination of elements, or arrangement of sounds. 

  • A literary work which brings together or arranges systematically parallel passages of historians respecting the same events, and shows their agreement or consistency. 

  • The relationship between two distinct musical pitches (musical pitches being frequencies of vibration which produce audible sound) played simultaneously. 

  • The academic study of chords. 

  • Agreement or accord. 

  • Two or more notes played simultaneously to produce a chord. 

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