coincidence vs happenchance

coincidence

noun
  • 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. 

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

happenchance

noun
  • Coincidence. 

adj
  • Characterized by happenstance; chance; fortunate or unfortunate. 

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