earl vs peacock

earl

noun
  • Any of various nymphalid butterflies of the genus Tanaecia. Other butterflies in this genus are called counts and viscounts. 

  • A British or Irish nobleman next in rank above a viscount and below a marquess; equivalent to a European count. A female using the style is termed a countess. 

peacock

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

  • 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. 

  • 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 earl and peacock occurred in a corpus of books? (source: Google Ngram Viewer )