footpath vs zebra crossing

footpath

noun
  • A paved path located at the side of a road for the use of pedestrians. 

  • Any set path or trail to be used by people walking. 

zebra crossing

noun
  • A pedestrian crossing featuring broad white stripes painted parallel to the street. 

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