prelate vs volkhv

prelate

noun
  • A clergyman of high rank and authority, having jurisdiction over an area or a group of people; normally a bishop. 

volkhv

noun
  • a pre-Christian priest from Slavic cultures 

  • a priest from Slavic neopaganism 

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