Muslim vs raghead

Muslim

noun
  • A person who is a follower and believer of Islam. 

adj
  • Being or relating to a believer of Islam. 

raghead

noun
  • A Muslim, Arab, Hindu, Sikh, Indian or member of any group that traditionally wears a headdress such as a turban, keffiyeh or headscarf. 

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