sidewalk vs trottoir

sidewalk

noun
  • (usually) a paved footpath located at the side of a road, for the use of pedestrians 

  • any paved footpath, even if not located at the side of a road 

trottoir

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

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