compatibility vs harmony

compatibility

noun
  • The state of being compatible; in which two or more things are able to exist or work together in combination without problems or conflict. 

  • the capability of two or more items or components of equipment or material to exist or function in the same system or environment without mutual interference. 

  • the capability that allows the substitution of one subsystem (storage facility), or of one functional unit (e.g., hardware, software), for the originally designated system or functional unit in a relatively transparent manner, without loss of information and without the introduction of errors. 

  • the continuity or good fit of material or members or components while being deformed. 

  • the ability to execute a given program on different types of computers without modification of the program or the computers. See backward compatibility and forward compatibility. 

harmony

noun
  • Agreement or accord. 

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

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

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

  • The academic study of chords. 

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

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