boulevard vs pedestrian crossing

boulevard

noun
  • The landscaping on the sides of a boulevard or other thoroughfare. 

  • A broad, well-paved and landscaped thoroughfare. 

  • A strip of land between a street and sidewalk. 

pedestrian crossing

noun
  • A place where pedestrians are permitted to or advised to cross a street. 

How often have the words boulevard and pedestrian crossing occurred in a corpus of books? (source: Google Ngram Viewer )