climbing bittersweet vs American bittersweet

climbing bittersweet and American bittersweet both are nouns.

Word	Noun	Adjective	Verb	Adverb
climbing bittersweet	Yes	No	No	No
American bittersweet	Yes	No	No	No

As nouns, climbing bittersweet and American bittersweet are synonyms defined as:

climbing bittersweet and American bittersweet: twining shrub of North America having yellow capsules enclosing scarlet seeds

Other synonyms of climbing bittersweet include bittersweet, Celastrus scandens, false bittersweet, shrubby bittersweet, staff vine, waxwork.

climbing bittersweet (noun)	American bittersweet (noun)
twining shrub of North America having yellow capsules enclosing scarlet seeds	twining shrub of North America having yellow capsules enclosing scarlet seeds