lucidity vs pellucidity

lucidity and pellucidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
lucidity	Yes	No	No	No
pellucidity	Yes	No	No	No

As nouns, lucidity and pellucidity are synonyms defined as:

lucidity and pellucidity: free from obscurity and easy to understand; the comprehensibility of clear expression

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

lucidity (noun)	pellucidity (noun)
free from obscurity and easy to understand; the comprehensibility of clear expression	passing light without diffusion or distortion
a lucid state of mind; not confused	free from obscurity and easy to understand; the comprehensibility of clear expression