coincidence vs consistency

coincidence

noun
  • Of events, the appearance of a meaningful connection when there is none. 

  • A coincidence point. 

  • A fixed point of a correspondence; a point of a variety corresponding to itself under a correspondence. 

  • Of objects, the property of being coincident; occurring at the same time or place. 

consistency

noun
  • Correspondence or compatibility. 

  • Freedom from contradiction; the state of a system of axioms such that none of the propositions deduced from them are mutually contradictory. 

  • Reliability or uniformity; the quality of being consistent. 

  • The degree of viscosity of something. 

  • Local coherence. 

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