anthracite vs anthracite coal

anthracite and anthracite coal both are nouns.

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

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

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

Other synonyms of anthracite include hard coal.

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