magus vs volkhv

magus

noun
  • A Zoroastrian priest. 

  • A magician; (derogatory) a conjurer or sorcerer, especially one who is a charlatan or trickster. 

volkhv

noun
  • a priest from Slavic neopaganism 

  • a pre-Christian priest from Slavic cultures 

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