botcher vs sablefish

botcher

noun
  • A young salmon; a grilse. 

  • A clumsy or incompetent worker; a bungler. 

sablefish

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

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