fish eagle vs ossifrage

fish eagle

noun
  • The osprey (Pandion haliaetus). 

  • Any of several species of birds of prey that feed on fish in the genus Haliaeetus (syn. Ichthyophaga). 

ossifrage

noun
  • The osprey. 

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