Zip vs peacock

Zip

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

peacock

noun
  • A male peafowl, especially Pavo cristatus, notable for its brilliant iridescently ocellated tail. 

  • A peafowl (of the genus Pavo or Afropavo), either male or female. 

  • Any of various Asian species of papilionid butterflies of the genus Papilio. 

  • A vainglorious person [from the 14th c.]. 

verb
  • To engage in peacocking, ostentatious dress or behaviour to impress women. 

  • To strut about proudly. 

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