parking lot vs roadway

parking lot

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

  • A road blocked by stop-start traffic. 

roadway

noun
  • The main or central portion of a road, used by the vehicles. 

  • A way used as a road. 

  • The portion of a bridge or railway used by traffic. 

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