language vs crystal clear

language is a noun but crystal clear is not a noun.

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

language (noun)	crystal clear (noun)
the mental faculty or power of vocal communication
the cognitive processes involved in producing and understanding linguistic communication
a systematic means of communicating by the use of sounds or conventional symbols
(language) communication by word of mouth
the text of a popular song or musical-comedy number
a system of words used to name things in a particular discipline

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