wah-wah vs whirr

wah-wah

noun
  • A wavering sound produced by means of a movable mute or by electronic means 

adj
  • Modifying the resonance of musical notes to produce the effect of a human voice. 

verb
  • to make a wah-wah sound 

intj
  • The sad trombone sound, used to indicate failure or disappointment. May be used mockingly; also written wah wah and womp womp. 

whirr

noun
  • A sibilant buzz or vibration; the sound of something in rapid motion. 

  • A bustle of noise and excitement. 

verb
  • To make a sibilant buzzing or droning sound. 

  • To cause (something) to make such a sound. 

  • To move or vibrate (something) with a buzzing sound. 

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