crosswalk vs trottoir

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. 

trottoir

noun

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

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