blackball vs conscript

blackball

verb
  • To ostracize. 

  • To vote against, especially in an exclusive organization. 

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. 

conscript

verb
  • To enrol(l) compulsorily; to draft; to induct. 

adj
  • Drafted into a military service or similar. 

  • Enrolled; written; registered. 

noun
  • A constructed script or writing system, especially for use with a conlang. 

  • One who is compulsorily enrolled, often into a military service; a draftee. 

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