humidify vs dampen

humidify and dampen both are verbs.

Word	Noun	Adjective	Verb	Adverb
humidify	No	No	Yes	No
dampen	No	No	Yes	No

As verbs, dampen is a hypernym of humidify; that is, dampen is a word with a broader meaning than humidify:

Other hypernyms of humidify include moisten, wash.

humidify (verb)	dampen (verb)
make (more) humid	lessen in force or effect
	make moist
	check; keep in check (a fire)
	make vague or obscure or make (an image) less visible
	reduce the amplitude (of oscillations or waves)
	suppress or constrain so as to lessen in intensity
	deaden (a sound or noise), especially by wrapping