leanness vs wateriness

leanness and wateriness both are nouns.

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

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

leanness: 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 leanness include abstemiousness, spareness, sparseness, sparsity, thinness, thinness.

leanness (noun)	wateriness (noun)
the property of having little body fat	the property of resembling the viscosity of water
the quality of being meager	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