hum vs smell

hum

verb
  • To reek, smell bad. 

  • To produce low sounds which blend continuously 

  • To express by humming. 

  • 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. 

smell

verb
  • To smell bad; to stink. 

  • To have a particular tincture or smack of any quality; to savour. 

  • To detect or perceive; often with out. 

  • Followed by like or of if descriptive: to have a particular smell, whether good or bad. 

  • To sense a smell or smells. 

  • To smell of; to have a smell of 

noun
  • A conclusion or intuition that a situation is wrong, more complex than it seems, or otherwise inappropriate. 

  • A sensation, pleasant or unpleasant, detected by inhaling air (or, the case of water-breathing animals, water) carrying airborne molecules of a substance. 

  • The sense that detects odours. 

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