dormancy vs idleness

dormancy

noun
  • The state or characteristic of being dormant; quiet, inactive restfulness. 

idleness

noun
  • The state of being idle; inactivity. 

  • Groundlessness; worthlessness; triviality; vanity; frivolity. 

  • The state of being indolent; indolence. 

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