purr vs queep

purr

verb
  • To make a vibrating throaty sound, as from pleasure. 

  • Of a cat, to make a vibrating sound in its throat when contented. 

  • To make a low and consistent rumbling sound. 

  • To say (something) in a throaty, seductive manner. 

intj
  • Throat vibrating sound made by a cat. 

noun
  • The vibrating sound made by a cat in its throat when contented. 

  • A throaty, seductive sound of pleasure made by a person. 

  • The low consistent rumble made by an engine at slow speed 

queep

verb
  • To emit a "queep" sound. 

intj
  • The sound a bird may make, similar to peep, chirp, cheep. 

  • The sound a machine may make, similar to beep. See pocketa-queep. 

noun
  • Non-flying duties, typically paperwork, that are undesirable to pilots. 

  • A rowing event, with two scullers and two sweepers per shell. 

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