Farm vs Mole

Farm

name
  • Broadwater Farm, an area of Tottenham, North London, England. 

Mole

name
  • A river in Surrey, England, tributary to the Thames. 

  • A river in Devon, England, tributary to the Taw. 

  • A surname. 

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