heritability vs legacy

heritability

noun
  • The condition of being inheritable 

  • The ratio of the genetic variance of a population to its phenotypic variance; i.e. the proportion of variability that is genetic in origin 

legacy

noun
  • Something inherited from a predecessor or the past. 

  • The descendant of an alumnus. 

  • Money or property bequeathed to someone in a will. 

adj
  • Left over from the past; no longer current. 

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