touring car vs two-seater

touring car

noun
  • A large open car seating four or more people and having a folding top. An automobile designed for touring; specifically, a roomy car, not a limousine. 

  • A type of race car based on a modified production car, that is a sedan or saloon car. 

two-seater

noun
  • A vehicle with seats for two people (a driver or pilot and one passenger) 

How often have the words touring car and two-seater occurred in a corpus of books? (source: Google Ngram Viewer )