shiitake mushroom vs Oriental black mushroom

shiitake mushroom and Oriental black mushroom both are nouns.

Word	Noun	Adjective	Verb	Adverb
shiitake mushroom	Yes	No	No	No
Oriental black mushroom	Yes	No	No	No

As nouns, shiitake mushroom and Oriental black mushroom are synonyms defined as:

shiitake mushroom and Oriental black mushroom: edible east Asian mushroom having a golden or dark brown to blackish cap and an inedible stipe

Other synonyms of shiitake mushroom include Chinese black mushroom, golden oak mushroom, Lentinus edodes, shiitake.

shiitake mushroom (noun)	Oriental black mushroom (noun)
edible east Asian mushroom having a golden or dark brown to blackish cap and an inedible stipe	edible east Asian mushroom having a golden or dark brown to blackish cap and an inedible stipe