idleness vs inapplication

idleness

noun
  • The state of being idle; inactivity. 

  • Groundlessness; worthlessness; triviality; vanity; frivolity. 

  • The state of being indolent; indolence. 

inapplication

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

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