achievement vs deficiency

achievement

noun
  • The act of achieving or performing; a successful performance; accomplishment. 

  • A great or heroic deed or feat; something accomplished by valor or boldness. 

  • The lexical aspect (aktionsart) of verbs or predicates that change in an instant. 

  • An award for completing a particular task or meeting an objective in a video game. 

  • An escutcheon or ensign armorial; a full display or depiction of all the heraldic components to which the bearer of a coat of arms is entitled; (now especially) a funeral shield: the hatchment. 

  • The successful completion of a socially defined goal or task, highlighting individual or group accomplishment. 

deficiency

noun
  • Inadequacy or incompleteness. 

  • An insufficiency, especially of something essential to health. 

  • The codimension of a linear system in the corresponding complete linear system. 

  • The amount by which the number of double points on a curve is short of the maximum for curves of the same degree. 

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