marvel vs rara avis

marvel

noun
  • That which causes wonder; a prodigy; a miracle. 

verb
  • To become filled with wonderment or admiration; to be amazed at something. 

rara avis

noun
  • A rare or unique, and thus outstanding or unusual, person or thing; a rare bird. 

  • A rare species or type of bird. 

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