lucid vs lucidity

lucid is not a noun while lucidity is a noun.

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

lucid (noun)	lucidity (noun)
	free from obscurity and easy to understand; the comprehensibility of clear expression
	a lucid state of mind; not confused

lucid (adjective)	lucidity (adjective)
(of language) transparently clear; easily understandable
transmitting light; able to be seen through with clarity
capable of thinking and expressing yourself in a clear and consistent manner
having a clear mind