Madras vs Rigby

Madras

name

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

  • Former name of Chennai, the capital and largest city of Tamil Nadu, India. 

noun

  • A style of curry dish purported to originate from the Madras region. 

Rigby

name

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

  • A surname. 

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