birdie vs sparrow

birdie

noun
  • A (little) bird; a birdling; a child's term for a bird. 

  • An electromagnetic signal generated from within an electronic device. 

  • A certain rude gesture in some countries, formed with the middle finger. 

  • A shuttlecock. 

  • A man's penis. 

  • The completion of a hole one stroke below par. 

  • Aw, that's a cute little birdie. Is it a budgie? 

  • A certain rude gesture in some countries, formed with the middle and index fingers. 

verb
  • To score a birdie at (a hole). 

  • To score a birdie. 

sparrow

noun
  • Generically, any small, nondescript bird. 

  • The house sparrow, Passer domesticus; a small bird with a short bill, and brown, white and gray feathers. 

  • A member of the family Passeridae, comprising small Old World songbirds. 

  • A member of the family Emberizidae, comprising small New World songbirds. 

  • A quick-witted, lively person. 

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