Bolivar vs Des Moines

Bolivar

name
  • A village in Ohio. 

  • A city, the county seat of Hardeman County, Tennessee 

  • A city, the county seat of Polk County, Missouri, United States. 

Des Moines

name
  • A village in New Mexico. 

  • A city in Washington. 

  • The capital city of Iowa, United States and the county seat of Polk County. 

  • A river in the United States, that flows from southern Minnesota into the Mississippi. 

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