cleric vs preacher

cleric

noun
  • A member of the clergy. 

  • A spellcaster class that receives their spells (especially healing) from their deity. 

adj
  • Of or pertaining to the clergy. 

preacher

noun
  • Someone who preaches a worldview, philosophy, or religion, especially someone who preaches the gospel; a clergyman or clergywoman. 

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