creditor vs doctrinaire

creditor

noun
  • One who gives credence to something; a believer. 

  • A person to whom a debt is owed. 

doctrinaire

noun
  • A person who stubbornly holds to a philosophy or opinion regardless of its feasibility. 

  • In France, in 1815-30, one of a school who desired a constitution like that of Britain. 

adj
  • Stubbornly holding on to an idea without concern for practicalities or reality. 

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