alleyway vs towpath

alleyway

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

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

towpath

noun
  • A path alongside a canal or river, originally for horses towing barges, now more often used as a footpath. 

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