blackball vs incorporation

blackball

noun
  • A black ball used to indicate such a negative vote. 

  • A rejection; a vote against admitting someone. 

  • A kind of large black sweet; a niggerball. 

  • A game, a standardized version of the English version of eight-ball. 

  • A substance for blacking shoes, boots, etc. or for taking impressions of engraved work. 

verb
  • To ostracize. 

  • To vote against, especially in an exclusive organization. 

incorporation

noun
  • A phenomenon by which a grammatical category forms a compound with its direct object or adverbial modifier, while retaining its original syntactic function. 

  • The union of different ingredients in one mass; mixture; combination; synthesis. 

  • A doctrine of constitutional law according to which certain parts of the Bill of Rights are extended to bind individual American states. ᵂᵖ 

  • A body incorporated; a corporation. 

  • The act of incorporating, or the state of being incorporated. 

  • The act of creating a corporation. 

  • The union of something with a body already existing; association; intimate union; assimilation. 

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