inapplication vs serenity

inapplication

noun
  • Lack of application, attention, or diligence; negligence; indolence. 

serenity

noun
  • A lack of agitation or disturbance. 

  • The state of being serene; calmness; peacefulness. 

  • A title given to a reigning prince or similar dignitary. 

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