hum vs tone

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 

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. 

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

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

tone

verb
  • to utter with an affected tone. 

  • to change the colour of 

  • to give a particular tone to 

  • to make (something) firmer 

pron
  • the one (of two) 

noun
  • The quality of being respectable or admirable. 

  • The pitch of a word that distinguishes a difference in meaning, for example in Chinese. 

  • The manner in which speech or writing is expressed. 

  • The character of a sound, especially the timbre of an instrument or voice. 

  • A specific pitch. 

  • (in a Gregorian chant) A recitational melody. 

  • The state of a living body or of any of its organs or parts in which the functions are healthy and performed with due vigor. 

  • a gun 

  • The shade or quality of a colour. 

  • The favourable effect of a picture produced by the combination of light and shade, or of colours. 

  • The definition and firmness of a muscle or organ; see also: tonus. 

  • (in the diatonic scale) An interval of a major second. 

  • Normal tension or responsiveness to stimuli. 

  • The general character, atmosphere, mood, or vibe (of a situation, place, etc.). 

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