free-thinking vs heathen

free-thinking

adj
  • Having opinions that are contrary to dogma or the positions of authority. 

heathen

adj
  • Uncultured; uncivilized; savage, philistine. 

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

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

  • An uncultured or uncivilized person, philistine. 

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