achievability vs instance

achievability

noun
  • The state or condition of being achievable. 

instance

noun
  • A case offered as an exemplification or a precedent; an illustrative example. 

  • A specific occurrence of something that is created or instantiated, such as a database, or an object of a class in object-oriented programming. 

  • Occasion; order of occurrence. 

  • A dungeon or other area that is duplicated for each player, or each party of players, that enters it, so that each player or party has a private copy of the area, isolated from other players. 

  • An individual copy of such a dungeon or other area. 

  • One of a series of recurring occasions, cases, essentially the same. 

verb
  • To mention as a case or example; to refer to; to cite 

  • To cite an example as proof; to exemplify. 

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