toll road vs turnpike

toll road

noun
  • A road for the use of which a toll must be paid; a turnpike. 

turnpike

noun
  • A toll road, especially a toll expressway. 

  • A trajectory on a finite time interval that satisfies an optimality criterion which is associated with a cost function. 

  • A gate or bar set across a road to stop carriages, animals, and sometimes people, until a toll is paid, 

  • A frame consisting of two bars crossing each other at right angles and turning on a post or pin, to hinder the passage of animals, but admitting a person to pass between the arms; a turnstile. 

  • A beam filled with spikes to obstruct passage; a cheval de frise. 

  • A winding stairway. 

verb
  • To form (a road, etc.) in the manner of a turnpike road, or into a rounded form, as the path of a road. 

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