oriental bittersweet vs Japan bittersweet

oriental bittersweet and Japan bittersweet both are nouns.

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

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

oriental bittersweet and Japan 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, Japanese bittersweet.

oriental bittersweet (noun)	Japan 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