perambulation vs travelogue

perambulation

noun
  • A survey, a tour; a walking around. 

  • The district thus inspected. 

  • An English legal ceremony in which an official from a town or parish walks around it to delineate and record its boundaries. 

travelogue

noun
  • A description of someone's travels, given in the form of narrative, public lecture, slide show or motion picture. 

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