peep vs peer

peep

noun
  • A quick look or glimpse, especially a furtive one. 

  • The sound of a steam engine's whistle; typically shrill. 

  • A feeble utterance or complaint. 

  • A sandpiper or other small wader. 

  • The first partial appearance of something; a beginning to appear. 

  • A short, soft, high-pitched sound, as made by a baby bird. 

  • person. 

verb
  • To look, especially through a narrow opening, or while trying not to be seen or noticed. 

  • To speak briefly with a quiet voice. 

  • To make a soft, shrill noise like a baby bird. 

  • To begin to appear; to look forth from concealment; to make the first appearance. 

  • To take a look at; check out. 

peer

noun
  • A look; a glance. 

  • Someone who pees, someone who urinates. 

  • Somebody who is, or something that is, at a level or of a value equal (to that of something else). 

  • A noble with a title, i.e., a peerage, and in times past, with certain rights and privileges not enjoyed by commoners. 

  • Someone who is approximately the same age (as someone else). 

  • A comrade; a companion; an associate. 

verb
  • To make equal in rank. 

  • To carry communications traffic terminating on one's own network on an equivalency basis to and from another network, usually without charge or payment. Contrast with transit where one pays another network provider to carry one's traffic. 

  • To look with difficulty, or as if searching for something. 

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