holy man vs priest

holy man

noun
  • A man who has devoted himself to religious practice, especially one who has absented himself from society to follow his religion; an ascetic or saint. 

priest

noun
  • a religious clergyman (clergywoman, clergyperson) who is trained to perform services or sacrifices at a church or temple 

  • the highest office in the Aaronic priesthood 

  • a blunt tool, used for quickly stunning and killing fish 

verb
  • To ordain as a priest. 

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