luculent vs crystal clear

luculent and crystal clear both are adjectives.

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

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

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

Other synonyms of luculent include limpid, lucid, pellucid, perspicuous.

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