anthracite coal vs anthracite

anthracite coal and anthracite both are nouns.

Word	Noun	Adjective	Verb	Adverb
anthracite coal	Yes	No	No	No
anthracite	Yes	No	No	No

As nouns, anthracite coal and anthracite are synonyms defined as:

anthracite coal and anthracite: a hard natural coal that burns slowly and gives intense heat

Other synonyms of anthracite coal include hard coal.

anthracite coal (noun)	anthracite (noun)
a hard natural coal that burns slowly and gives intense heat	a hard natural coal that burns slowly and gives intense heat