clarity vs lucidness

clarity and lucidness both are nouns.

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

As nouns, clarity and lucidness are synonyms defined as:

clarity and lucidness: free from obscurity and easy to understand; the comprehensibility of clear expression

Other synonyms of clarity include clearness, limpidity, lucidity, pellucidity.

clarity (noun)	lucidness (noun)
the quality of clear water	free from obscurity and easy to understand; the comprehensibility of clear expression
free from obscurity and easy to understand; the comprehensibility of clear expression