Mohammedan vs Moslem

Mohammedan

noun

  • Muslim. 

adj

  • Muslim, Islamic. 

  • relating to Mohammed. 

Moslem

noun

  • Dated spelling of Muslim. 

adj

  • Dated spelling of Muslim. 

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