contrarian vs opponent

contrarian

noun
  • A person who likes or tends to express a contradicting viewpoint, especially one who denounces the majority persuasion. 

  • A financial investor who tends to have an opinion of market trends at variance with most others. 

adj
  • Pertaining to or characteristic of a contrarian. 

opponent

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

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

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

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