harmonious vs perfecting

harmonious

adj
  • Having components pleasingly or appropriately combined. 

  • Showing accord in feeling or action. 

  • Melodious; in harmony. 

perfecting

noun
  • The process of printing on both sides of the printed-on material during its single pass through the printing press. 

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