postulate vs presumption

postulate

noun
  • Something assumed without proof as being self-evident or generally accepted, especially when used as a basis for an argument. Sometimes distinguished from axioms as being relevant to a particular science or context, rather than universally true, and following from other axioms rather than being an absolute assumption. 

  • An axiom. 

  • A requirement; a prerequisite. 

  • A fundamental element; a basic principle. 

verb
  • To appoint or request one's appointment to an ecclesiastical office. 

  • To assume as a truthful or accurate premise or axiom, especially as a basis of an argument. 

adj
  • Postulated. 

presumption

noun
  • the belief of something based upon reasonable evidence, or upon something known to be true 

  • the condition upon which something is presumed 

  • the act of presuming, or something presumed 

  • An inference that a trier of fact is either permitted or required to draw under certain factual circumstances (as prescribed by statute or case law) unless the party against whom the inference is drawn is able to rebut it with admissible, competent evidence. 

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