liberal vs true believer

liberal

noun
  • Someone with progressive or left-wing views; one with a left-wing ideology. 

  • A supporter of any of several liberal parties. 

  • One who favors individual voting rights, human and civil rights, and laissez-faire markets (also called "classical liberal"; compare libertarian). 

  • One with liberal views, supporting individual liberty (see Wikipedia's article on Liberalism). 

adj
  • Widely open to new ideas, willing to depart from established opinions or conventions; permissive. 

  • Generous; permitting liberty; willing to give unsparingly. 

  • Ample, abundant; generous in quantity. 

  • Open to political or social changes and reforms associated with either classical or modern liberalism. 

  • Pertaining to those arts and sciences the study of which is considered to provide general knowledge, as opposed to vocational/occupational, technical or mechanical training. 

true believer

noun
  • One who believes dogmatically in something regardless of evidence or even conclusive proof that the thing is false or was staged; one who has true-believer syndrome. 

  • Used other than figuratively or idiomatically: see true, believer. 

  • A strict follower of a doctrine. 

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