solubility vs soluble

solubility is a noun but soluble is not a noun.

Word	Noun	Adjective	Verb	Adverb
solubility	Yes	No	No	No
soluble	No	Yes	No	No

solubility (noun)	soluble (noun)
the quality of being soluble and easily dissolved in liquid
the property (of a problem or difficulty) that makes it possible to solve
the quantity of a particular substance that can dissolve in a particular solvent (yielding a saturated solution)

solubility (adjective)	soluble (adjective)
	(of a substance) capable of being dissolved in some solvent (usually water)
	susceptible of solution or of being solved or explained