infidel vs non-Muslim

infidel

noun

  • One who does not believe in a certain religion. 

  • One with no religious beliefs. 

  • One who does not believe in a certain principle. 

adj

  • Rejecting a specific religion. 

  • Of, characteristic of, or relating to unbelievers or unbelief. 

non-Muslim

noun

  • One who is not a Muslim. 

adj

  • Not Muslim. 

How often have the words infidel and non-Muslim occurred in a corpus of books? (source: Google Ngram Viewer )