apostasy vs denier

apostasy

noun
  • The renunciation of a belief or set of beliefs. 

  • Specifically, the renunciation of one's religion or faith. 

denier

noun
  • One who denies or forbids something. 

  • One who denies the existence of something. 

  • An old French coin worth one-twelfth of a sou. 

  • A unit of linear density which indicates the fineness of fiber or yarn, equal to one gram per 9000 meters, used especially to measure or indicate the fineness of hosiery. Originally equal to the weight of a denier coin per 9600 aunes. 

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