black lung vs coal miner's lung

black lung and coal miner's lung both are nouns.

Word	Noun	Adjective	Verb	Adverb
black lung	Yes	No	No	No
coal miner's lung	Yes	No	No	No

As nouns, black lung and coal miner's lung are synonyms defined as:

black lung and coal miner's lung: lung disease caused by inhaling coal dust

Other synonyms of black lung include anthracosis, black lung disease.

black lung (noun)	coal miner's lung (noun)
lung disease caused by inhaling coal dust	lung disease caused by inhaling coal dust