azure vs sky-blue

azure and sky-blue both are nouns.

Word	Noun	Adjective	Verb	Adverb
azure	Yes	Yes	Yes	No
sky-blue	Yes	Yes	No	No

As adjectives, azure and sky-blue are synonyms defined as:

azure and sky-blue: of a deep somewhat purplish blue color similar to that of a clear October sky

Other synonyms of azure include bright blue, cerulean.

As nouns, azure and sky-blue are synonyms defined as:

Other synonyms of azure include cerulean, lazuline, sapphire.

azure (noun)	sky-blue (noun)
a light shade of blue	a light shade of blue

azure (adjective)	sky-blue (adjective)
of a deep somewhat purplish blue color similar to that of a clear October sky	of a deep somewhat purplish blue color similar to that of a clear October sky

azure (verb)	sky-blue (verb)
color azure