reality vs supposition

reality

noun
  • A real entity, event, or other fact. 

  • The entirety of all that is real. 

  • The real world. 

  • The state of being actual or real; realness. 

  • An individual observer's own subjective perception of that which is real. 

supposition

noun
  • Something that is supposed; an assumption made to account for known facts, conjecture. 

  • The act or an instance of supposing. 

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