crosswalk vs footwalk

crosswalk

noun

  • A point designated for pedestrians to cross a street. 

  • A mapping between equivalent elements (fields) in different database schemas. 

verb

  • To map equivalent elements (fields) in different database schemas. 

footwalk

noun

  • A pedestrian walkway. 

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