Boulder vs Flagstaff

Boulder

name
  • A home rule municipality, the county seat of Boulder County, Colorado, United States. 

  • A town in Western Australia, merged with Kalgoorlie in 1989. 

  • A town, the county seat of Jefferson County, Montana, United States. 

  • A small town in Garfield County, Utah, United States. 

  • A census-designated place in Sublette County, Wyoming, United States. 

  • An unincorporated community in Barbour County, West Virginia, United States. 

  • An unincorporated community in Clinton County, Illinois, United States. 

Flagstaff

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

  • A town in Victoria, Australia. 

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