preciseness vs clearness

preciseness and clearness both are nouns.

Word	Noun	Adjective	Verb	Adverb
preciseness	Yes	No	No	No
clearness	Yes	No	No	No

As nouns, clearness is a hypernym of preciseness; that is, clearness is a word with a broader meaning than preciseness:

preciseness: clarity as a consequence of precision
clearness: free from obscurity and easy to understand; the comprehensibility of clear expression

Other hypernyms of preciseness include clarity, limpidity, lucidity, lucidness, pellucidity.

preciseness (noun)	clearness (noun)
the quality of being reproducible in amount or performance	free from obscurity and easy to understand; the comprehensibility of clear expression
clarity as a consequence of precision	the quality of clear water