Islamic vs Mohammedan

Islamic

noun

  • a malapropism for 'Islamist' 

adj

  • Of, pertaining to, originating in, characteristic of, or deriving from Muslims or Islam. 

Mohammedan

noun

  • Muslim. 

adj

  • Muslim, Islamic. 

  • relating to Mohammed. 

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