preciousness vs precious

preciousness is a noun but precious is not a noun.

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

preciousness (noun)	precious (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

preciousness (adjective)	precious (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

preciousness (adverb)	precious (adverb)
	very