crystal clear vs lucid

crystal clear and lucid both are adjectives.

Word	Noun	Adjective	Verb	Adverb
crystal clear	No	Yes	No	No
lucid	No	Yes	No	No

As adjectives, crystal clear and lucid are synonyms defined as:

crystal clear and lucid: (of language) transparently clear; easily understandable

Other synonyms of crystal clear include limpid, luculent, pellucid, perspicuous.

As adjectives, crystal clear and lucid are synonyms defined as:

crystal clear and lucid: transmitting light; able to be seen through with clarity

Other synonyms of crystal clear include crystalline, limpid, pellucid, transparent.

crystal clear (adjective)	lucid (adjective)
(of language) transparently clear; easily understandable	(of language) transparently clear; easily understandable
transmitting light; able to be seen through with clarity	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