X marks the spot vs locality

X marks the spot

phrase
  • One will find what one is looking for under an obvious sign for it. 

locality

noun
  • Limitation to a county, district, or place. 

  • The fact or quality of having a position in space. 

  • A built-up area, i.e. a city, town or village 

  • An area or district considered as the site of certain activities; a neighbourhood. 

  • The features or surroundings of a particular place. 

  • The condition of being local. 

  • The situation or position of an object. 

How often have the words X marks the spot and locality occurred in a corpus of books? (source: Google Ngram Viewer )