round trip vs tour

round trip

noun
  • A trip from one destination to another and then returning to the starting location. 

  • The investment of a borrowed overdraft in order to make a profit in the same market. 

  • The export and eventual reimport of a file, data, etc. without loss of fidelity. 

  • In an oil-drilling operation, the raising, disassembly and replacement of the drilling equipment. 

  • A form of barter that involves the sale of an unused asset and the purchase of the same asset back again, or a similar one, typically used in accounting fraud. 

tour

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

  • 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 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. 

verb
  • To make a journey 

  • To make a circuit of a place 

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