moisture vs wetness

moisture and wetness both are nouns.

Word	Noun	Adjective	Verb	Adverb
moisture	Yes	No	No	No
wetness	Yes	No	No	No

As nouns, wetness is a hypernym of moisture; that is, wetness is a word with a broader meaning than moisture:

moisture: wetness caused by water
wetness: the condition of containing or being covered by a liquid (especially water)

moisture (noun)	wetness (noun)
wetness caused by water	the condition of containing or being covered by a liquid (especially water)