hum vs tune

hum

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

  • 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. 

  • An often indistinct sound resembling human humming. 

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 

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

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

tune

noun
  • A melody. 

  • The act of tuning or maintenance. 

  • The state or condition of being correctly tuned. 

  • A song, or short musical composition. 

verb
  • To adjust (a musical instrument) so that it produces the correct pitches. 

  • To attune; to adapt in style of music; to make harmonious. 

  • to adjust the parameters of singing voice synthesis software such as VOCALOID (in order to achieve certain singing techniques, increase the human quality of the voice, etc.) 

  • To adjust or modify (esp. a mechanical or electrical device) so that it functions optimally. 

  • To adjust the frequency on a radio or TV set, so as to receive the desired channel. 

  • To be impudent towards; to cheek. 

  • To make more precise, intense, or effective; to put into a proper state or disposition. 

  • To give a certain tone or character to. 

  • Of faculties, senses, etc.: to adapt to or direct towards a particular target. 

intj
  • Used to show appreciation or approval of a song. 

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