Bluff vs Flagstaff

Bluff

name
  • A town in New Zealand, the southernmost in the South Island, and seaport for the Southland region. 

Flagstaff

name
  • A town in Victoria, Australia. 

  • A city, the county seat of Coconino County, Arizona, United States. 

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