Coprinus atramentarius vs inky cap

Coprinus atramentarius and inky cap both are nouns.

Word	Noun	Adjective	Verb	Adverb
Coprinus atramentarius	Yes	No	No	No
inky cap	Yes	No	No	No

As nouns, Coprinus atramentarius and inky cap are synonyms defined as:

Coprinus atramentarius and inky cap: having a cap that melts into an inky fluid after spores have matured

Other synonyms of Coprinus atramentarius include inky-cap mushroom.

Coprinus atramentarius (noun)	inky cap (noun)
having a cap that melts into an inky fluid after spores have matured	having a cap that melts into an inky fluid after spores have matured