Chancy vs Constant

Chancy

name
  • An English surname from Old French. 

  • A male given name transferred from the surname. 

Constant

name
  • A male given name from Latin, feminine equivalent Constance 

  • A surname. 

  • A locality in Saint George parish, Barbados. 

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