bullpen vs dungeon

bullpen

noun
  • A place for someone or something to get ready. 

  • The relief pitchers of a team collectively. 

  • An enclosed area for pitchers to warm up in during a game. 

  • An enclosed area used to hold bulls. 

  • An open seating arrangement where project teams can communicate openly with minimal effort. 

dungeon

noun
  • A room dedicated to sadomasochistic sexual activity. 

  • An area inhabited by enemies, containing story objectives, treasure and bosses. 

  • An underground prison or vault, typically built underneath a castle. 

verb
  • To imprison in a dungeon. 

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