precious vs preciousness

precious is not a noun while preciousness is a noun.

Word	Noun	Adjective	Verb	Adverb
precious	No	Yes	No	Yes
preciousness	Yes	No	No	No

precious (noun)	preciousness (noun)
	the positive quality of being precious and beyond value
	the quality of being fastidious or excessively refined
	the quality possessed by something with a great price or value

precious (adjective)	preciousness (adjective)
obviously contrived to charm
characterized by feeling or showing fond affection for
of high worth or cost
held in great esteem for admirable qualities especially of an intrinsic nature

precious (adverb)	preciousness (adverb)
very