perfection vs perfectness

perfection

noun
  • The quality or state of being perfect or complete, so that nothing substandard remains; the highest attainable state or degree of excellence 

  • A quality, endowment, or acquirement completely excellent; an ideal; faultlessness; especially, the divine attribute of complete excellence. 

verb
  • To perfect. 

perfectness

noun
  • The quality of being perfect; perfection. 

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