oriental bittersweet vs Japanese bittersweet

oriental bittersweet and Japanese bittersweet both are nouns.

Word	Noun	Adjective	Verb	Adverb
oriental bittersweet	Yes	No	No	No
Japanese bittersweet	Yes	No	No	No

As nouns, oriental bittersweet and Japanese bittersweet are synonyms defined as:

oriental bittersweet and Japanese bittersweet: ornamental Asiatic vine with showy orange-yellow fruit with a scarlet aril; naturalized in North America

Other synonyms of oriental bittersweet include Celastric articulatus, Celastrus orbiculatus, Japan bittersweet.

oriental bittersweet (noun)	Japanese bittersweet (noun)
ornamental Asiatic vine with showy orange-yellow fruit with a scarlet aril; naturalized in North America	ornamental Asiatic vine with showy orange-yellow fruit with a scarlet aril; naturalized in North America