hum vs rattle

hum

noun
  • An often indistinct sound resembling human humming. 

  • Unpleasant odour. 

  • A phenomenon, or collection of phenomena, involving widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise not audible to all people. 

  • Busy activity, like the buzz of a beehive. 

  • A hummed tune, i.e. created orally with lips closed. 

intj
  • Synonym of um: a noise indicating doubt, uncertainty, &c. 

  • Synonym of hmm: a noise indicating thought, consideration, &c. 

verb
  • To produce low sounds which blend continuously 

  • To express by humming. 

  • To reek, smell bad. 

  • To make a sound from the vocal chords without pronouncing any real words, with one's lips closed. 

  • To drone like certain insects naturally do in motion, or sounding similarly 

  • To buzz, be busily active like a beehive 

rattle

noun
  • A rapid succession of percussive sounds, as made by loose objects shaking or vibrating against one another. 

  • The set of rings at the end of a rattlesnake's tail which produce a rattling sound. 

  • A rough noise produced in the throat by air passing through obstructed airways; croup; a death rattle. 

  • A musical instrument that makes a rattling sound. 

  • A noisy, senseless talker; a jabberer. 

  • A baby’s toy designed to make sound when shaken, usually containing loose grains or pellets in a hollow container. 

  • Any of various plants of the genera Rhinanthus and Pedicularis, whose seeds produce a rattling noise in the wind. 

verb
  • To make a clatter with one's voice; to talk rapidly and idly; often with on or away. 

  • To create a rattling sound by shaking or striking. 

  • To drive or ride briskly, so as to make a clattering. 

  • To scare, startle, unsettle, or unnerve. 

  • To make a rattling noise; to make noise by or from shaking. 

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