lucidness vs comprehensibility

lucidness and comprehensibility both are nouns.

Word	Noun	Adjective	Verb	Adverb
lucidness	Yes	No	No	No
comprehensibility	Yes	No	No	No

As nouns, comprehensibility is a hypernym of lucidness; that is, comprehensibility is a word with a broader meaning than lucidness:

lucidness: free from obscurity and easy to understand; the comprehensibility of clear expression
comprehensibility: the quality of comprehensible language or thought

Other hypernyms of lucidness include understandability.

lucidness (noun)	comprehensibility (noun)
free from obscurity and easy to understand; the comprehensibility of clear expression	the quality of comprehensible language or thought