idleness vs shiftlessness

idleness

noun
  • Groundlessness; worthlessness; triviality; vanity; frivolity. 

  • The state of being idle; inactivity. 

  • The state of being indolent; indolence. 

shiftlessness

noun
  • The property of being shiftless. 

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