owlet vs snowy owl

owlet

noun
  • A young owl; owling. 

  • One of a species of small owls, such as Athene noctua. 

  • An owlet moth. 

snowy owl

noun
  • A large, white, nomadic Arctic owl, Bubo scandiacus. 

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