moisten vs dampen

moisten and dampen both are verbs.

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

As verbs, moisten and dampen are synonyms defined as:

Other synonyms of moisten include wash.

moisten (verb)	dampen (verb)
make moist	lessen in force or effect
moisten with fine drops	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