generalisation vs presumption

generalisation

noun
  • Inductive reasoning from detailed facts to general principles. 

  • The formulation of general concepts from specific instances by abstracting common properties. 

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