wetness vs wateriness

wetness and wateriness both are nouns.

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

As nouns, wateriness is a hyponym of wetness; that is, wateriness is a word with a more specific, narrower meaning than wetness:

wetness: the condition of containing or being covered by a liquid (especially water)
wateriness: the wetness of ground that is covered or soaked with water

wetness (noun)	wateriness (noun)
the condition of containing or being covered by a liquid (especially water)	the property of resembling the viscosity of water
	meagerness or poorness connoted by a superfluity of water (in a literary style as well as in a food)
	the wetness of ground that is covered or soaked with water