crevalle vs sablefish

crevalle

noun
  • A fish, the pompano (Trachinotus carolinus). 

  • A fish, the cavally or jurel. 

sablefish

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

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