Zip vs dotterel

Zip

noun
  • A Sicilian or Italian Mafioso who is relatively new to the United States. 

dotterel

noun
  • A small brown-and-black bird, Charadrius morinellus, of the plover family. 

  • A gullible fool, especially an elderly person with impaired faculties. 

  • Any of various small birds of Australasia thought to resemble the Eurasian dotterel. 

adj
  • decayed 

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