patriarch vs prediluvian

patriarch

noun
  • An old leader of a village or community. 

  • A founder of a political or religious movement, an organization or an enterprise. 

  • The male head of a household or nuclear family. 

  • The male progenitor of a genetic or tribal line, or of a clan or extended family. 

  • The highest form of bishop, in the ancient world having authority over other bishops in the province but now generally as an honorary title; in Roman Catholicism, considered a bishop second only to the Pope in rank. 

  • In Biblical contexts, a male leader of a family, tribe or ethnic group, especially one of the twelve sons of Jacob (considered to have created the twelve tribes of Israel) or (in plural) Abraham, Isaac and Jacob. 

prediluvian

noun
  • One who lived before the Flood; an antediluvian. 

adj
  • Before the Flood; antediluvian. 

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