Mole vs Smoke

Mole

name

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

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

  • A surname. 

Smoke

name

  • London. 

  • The 44th sura (chapter) of the Qur'an. 

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