humming vs noise

humming and noise both are nouns.

Word	Noun	Adjective	Verb	Adverb
humming	Yes	No	No	No
noise	Yes	No	Yes	No

As nouns, noise is a hypernym of humming; that is, noise is a word with a broader meaning than humming:

humming (noun)	noise (noun)
the act of singing with closed lips	the quality of lacking any predictable order or plan
a humming noise	incomprehensibility resulting from irrelevant information or meaningless facts or remarks
	the auditory experience of sound that lacks musical quality; sound that is a disagreeable auditory experience
	a loud outcry of protest or complaint
	sound of any kind (especially unintelligible or dissonant sound)
	electrical or acoustic activity that can disturb communication

humming (verb)	noise (verb)
	emit a noise