poorness vs wateriness

poorness and wateriness both are nouns.

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

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

poorness: the quality of being meager
wateriness: meagerness or poorness connoted by a superfluity of water (in a literary style as well as in a food)

Other hyponyms of poorness include abstemiousness, spareness, sparseness, sparsity, thinness, thinness.

poorness (noun)	wateriness (noun)
the quality of being poorly made or maintained	the property of resembling the viscosity of water
less than adequate	meagerness or poorness connoted by a superfluity of water (in a literary style as well as in a food)
the quality of being meager	the wetness of ground that is covered or soaked with water
the state of having little or no money and few or no material possessions