brig vs sunfish

brig

noun
  • A two-masted vessel, square-rigged on both foremast and mainmast 

  • Bridge. 

  • Brigadier. 

  • A jail or guardhouse, especially in a naval military prison or jail on a ship, navy base, or (in fiction) spacecraft. 

sunfish

noun
  • Any of various large marine fishes of the family Molidae that have an oval compressed body. 

  • Any of various small freshwater fishes of the family Centrarchidae, often with iridescent colours and having a laterally compressed body. 

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