hum vs peal

hum

verb
  • To express by humming. 

  • To produce low sounds which blend continuously 

  • 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 

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

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

noun
  • 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. 

  • An often indistinct sound resembling human humming. 

peal

verb
  • To sound with a peal or peals. 

  • To resound; to echo. 

  • To assail with noise. 

  • To utter or sound loudly. 

noun
  • The changes rung on a set of bells; in the strict sense a full peal of at least 5040 changes. 

  • A set of bells tuned to each other according to the diatonic scale. 

  • A loud sound, or a succession of loud sounds, as of bells, thunder, cannon, shouts, laughter, of a multitude, etc. 

  • A small salmon; a grilse; a sewin. 

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