Heathen vs disbelieving

Heathen

adj
  • Pertaining or adhering to the Germanic neo-pagan faith Heathenry. 

noun
  • An adherent of the Germanic neo-pagan faith of Heathenry. 

disbelieving

adj
  • refusing to believe; skeptical or incredulous 

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