bergylt vs fathead

bergylt

noun
  • The Ballan wrasse, Labrus bergylta another North Atlantic fish 

  • The rose fish, an edible red fish found in the North Atlantic, Sebastes norvegicus. 

fathead

noun
  • Any of several species of fish of the genus Cubiceps 

  • An idiot; a fool. 

  • A blobfish, Psychrolutes microporos 

  • A labroid food fish of California; the California sheephead. Semicossyphus pulcher. 

  • A cyprinid fish of the Mississippi valley, Pimephales promelas, the black-headed minnow. 

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