heathen vs polytheistic

heathen

noun
  • A person who does not follow a Christian religion; a pagan. 

  • An uncultured or uncivilized person, philistine. 

adj
  • Uncultured; uncivilized; savage, philistine. 

  • Not adhering to the Christian religion (though usually excluding the Jews); pagan. 

polytheistic

adj
  • Of or relating to polytheism, 

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