sabalo vs silverking

sabalo

noun
  • A common fish of southeastern South America, Prochilodus lineatus. 

  • Elops saurus 

  • tarpon (Megalops atlanticus) 

  • milkfish (Chanos chanos) 

  • Fish of various species in the genus Brycon, native to northern South America. 

silverking

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