Koran thumper vs Mohammedan

Koran thumper

noun

  • a Muslim fundamentalist, or a zealous Muslim. 

Mohammedan

noun

  • Muslim. 

adj

  • Muslim, Islamic. 

  • relating to Mohammed. 

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