scow vs sunfish

scow

noun
  • A large flat-bottomed boat, having broad, square ends. 

verb
  • To transport in a scow. 

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 scow and sunfish occurred in a corpus of books? (source: Google Ngram Viewer )