parkway vs railway line

parkway

noun
  • a railway station built on the edge of a town, typically with a large car park to function as a park and ride interchange. 

  • A scenic freeway. 

  • A tree lawn. 

  • A divided highway with a landscaped median. 

railway line

noun
  • A railway track; a pair of rails on which a railway train runs. 

  • A group of railway tracks running parallel, allowing one track to be used for each direction (a double-track railway line), or allowing segregation of fast trains from stopping trains (a four-track railway line). 

  • An organization that runs a railroad. 

How often have the words parkway and railway line occurred in a corpus of books? (source: Google Ngram Viewer )