Louisville vs Oskaloosa

Louisville

name
  • A city, the county seat of Jefferson County, Kentucky. 

  • A city, the county seat of Jefferson County, Georgia, United States. 

  • A village, the county seat of Clay County, Illinois. 

  • A city, the county seat of Winston County, Mississippi. 

  • A town in Barbour County, Alabama. 

Oskaloosa

name
  • A small city, the county seat of Jefferson County, Kansas, United States. 

  • A city, the county seat of Mahaska County, Iowa, United States. 

  • An unincorporated community in Barton County, Missouri, United States. 

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