idleness vs tour

idleness

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

  • The state of being idle; inactivity. 

  • The state of being indolent; indolence. 

tour

verb
  • To make a journey 

  • To make a circuit of a place 

noun
  • A trip taken to another country in which several matches are played. 

  • A set of competitions which make up a championship. 

  • A tour of duty. 

  • A circuit of snooker tournaments 

  • A street and road race, frequently multiday. 

  • A journey through a particular building, estate, country, etc. 

  • A guided visit to a particular place, or virtual place. 

  • A journey through a given list of places, such as by an entertainer performing concerts. 

  • A closed trail. 

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