dearness vs preciousness

dearness and preciousness both are nouns.

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

As nouns, dearness and preciousness are synonyms defined as:

dearness and preciousness: the quality possessed by something with a great price or value

Other synonyms of dearness include costliness.

dearness (noun)	preciousness (noun)
the quality possessed by something with a great price or value	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