moisten vs wet

moisten is not a noun while wet is a noun.

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

As verbs, wet is a hypernym of moisten; that is, wet is a word with a broader meaning than moisten:

moisten (noun)	wet (noun)
	wetness caused by water

moisten (adjective)	wet (adjective)
	covered or soaked with a liquid such as water
	producing or secreting milk
	supporting or permitting the legal production and sale of alcoholic beverages
	containing moisture or volatile components
	consisting of or trading in alcoholic liquor
	very drunk

moisten (verb)	wet (verb)
make moist	make one's bed or clothes wet by urinating
moisten with fine drops	cause to become wet