beshow vs sablefish

beshow

noun
  • A large food fish (Anoplopoma fimbria) of the north Pacific coast; the candlefish or sablefish. 

sablefish

noun
  • A dark-coloured marine fish, Anoplopoma fimbria, of North American Pacific waters. 

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