come on vs hum

come on

intj
  • An expression of disbelief. 

  • An expression of defiance or as a challenge; approach; come at me. 

  • Synonym of let's go, a cheer or expression of support, encouragement, &c. 

  • Come along with me; join me in going. 

  • An expression of frustration, exasperation, or impatience; hurry up. 

verb
  • Elaboration of come (in the sense of move towards the speaker or other focus), emphasising motion or progress, or conveying a nuance of familiarity or encouragement. 

  • To encounter, discover; to come upon. 

  • To be broadcast (through a device), or (of a broadcast) to begin playing. 

  • To appear on a stage or in a performance. 

  • To activate; to turn on. 

  • To enter the playing field. 

  • To show sexual or relational interest through words or sometimes actions. 

  • To progress, to develop. 

  • To get one's period, start menstruating. 

hum

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. 

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 

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