explicitness vs clearness

explicitness and clearness both are nouns.

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

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

explicitness: clarity as a consequence of being explicit
clearness: free from obscurity and easy to understand; the comprehensibility of clear expression

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

explicitness (noun)	clearness (noun)
clarity as a consequence of being explicit	free from obscurity and easy to understand; the comprehensibility of clear expression
	the quality of clear water