denier vs opponent

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. 

opponent

noun
  • One who is opposed or objects (to a policy, course of action or set of ideas). 

  • The participant who opens an academic debate by putting forward objections to a theological or philosophical thesis. 

  • One who opposes another; one who works or takes a position against someone or something; one who attempts to stop the progress of someone or something. 

  • One who opposes another in words (in a dispute, argument or controversy). 

  • One who opposes another physically (in a fight, sport, game, or competition). 

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