beanball vs caput

beanball

noun
  • A pitch deliberately thrown at the head of the batter. 

caput

noun
  • The head. 

  • A knob-like protuberance or capitulum. 

  • The top or superior part of a thing. 

  • The council or ruling body of the University of Cambridge prior to the constitution of 1856. 

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