delusion vs orthodoxy

delusion

noun
  • A fixed, false belief, that will not change, despite evidence to the contrary. 

  • A false belief that is resistant to confrontation with actual facts. 

  • The state of being deluded or misled, or process of deluding somebody. 

  • That which is falsely or delusively believed or propagated; false belief; error in belief. 

orthodoxy

noun
  • Correctness in doctrine and belief. 

  • Conformity to established and accepted beliefs (usually of religions). 

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