Boulder vs Clay

Boulder

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

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

Clay

name
  • A town, the county seat of Clay County, West Virginia, United States. 

  • A surname originating as an occupation. 

  • A census-designated place in Sacramento County, California, United States. 

  • A male given name transferred from the surname. 

  • A diminutive of the male given name Clayton. 

  • A number of townships in the United States, listed under Clay Township. 

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