alleyway vs zebra crossing

alleyway

noun
  • A narrow street formed by the proximity of adjacent buildings. 

  • A passage between two rows of cabins in a ship. 

zebra crossing

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

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