Basin vs Chesterfield

Basin

name
  • A census-designated place in Jefferson County, Montana 

  • A town, the county seat of Big Horn County, Wyoming 

Chesterfield

name
  • A town, the county seat of Chesterfield County, South Carolina, United States. 

  • A market town and borough in Derbyshire, England, United Kingdom. 

  • Any of a number settlements. 

  • A municipality of St. Louis County, Missouri, United States. 

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