Heathen vs heathenistic

Heathen

adj

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

noun

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

heathenistic

adj

  • Relating to heathenism. 

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