stint vs tour

stint

verb
  • To impregnate successfully; to get with foal. 

  • To assign a certain task to (a person), upon the performance of which he/she is excused from further labour for that day or period; to stent. 

  • To be sparing or mean. 

  • To restrain within certain limits; to bound; to restrict to a scant allowance. 

noun
  • Limit; bound; restraint; extent. 

  • Quantity or task assigned; proportion allotted. 

  • Any of several very small wading birds in the genus Calidris. Types of sandpiper, such as the dunlin or the sanderling. 

  • A period of time spent doing or being something; a spell. 

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 stint and tour occurred in a corpus of books? (source: Google Ngram Viewer )