assumption vs presumption

assumption

noun
  • The thing supposed; a postulate, or proposition assumed; a supposition. 

  • A festival in honor of the ascent of the Virgin Mary into heaven, celebrated on 15 August. 

  • Assumptio. 

  • The minor or second proposition in a categorical syllogism. 

  • The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim. 

  • The taking of a person up into heaven. 

  • The act of assuming, or taking to or upon oneself; the act of taking up or adopting. 

presumption

noun
  • the act of presuming, or something presumed 

  • the condition upon which something is presumed 

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

  • 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 assumption and presumption occurred in a corpus of books? (source: Google Ngram Viewer )