dampen vs moisten

dampen and moisten both are verbs.

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

As verbs, dampen and moisten are synonyms defined as:

Other synonyms of dampen include wash.

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