ducky vs turtle dove

ducky

noun
  • A duck (aquatic bird), especially a toy rubber duck. 

  • An affectionate pet name. 

adj
  • Darling, charming, cute. 

  • Resembling or characteristic of a duck. 

turtle dove

noun
  • Any of several (species of) birds, called by this traditional name, mainly in the genus Streptopelia, of the family Columbidae (doves and pigeons, which also included the extinct passenger pigeon, dodo, and solitaire). 

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