parking lot vs toll road

parking lot

noun
  • A road blocked by stop-start traffic. 

  • An open area, generally paved, where automobiles may be left when not in use. 

toll road

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

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