pagan vs polytheist

pagan

noun
  • A person not adhering to a main world religion; a follower of a pantheistic or nature-worshipping religion. 

  • An uncivilized or unsocialized person. 

  • An unruly, badly educated child. 

adj
  • Relating to, characteristic of religions that differ from main world religions. 

  • Savage, immoral, uncivilized, wild. 

polytheist

noun
  • a believer in, or advocate of, polytheism 

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