bittersweet nightshade vs climbing nightshade

bittersweet nightshade and climbing nightshade both are nouns.

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

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

bittersweet nightshade and climbing nightshade: poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America

Other synonyms of bittersweet nightshade include bittersweet, deadly nightshade, poisonous nightshade, Solanum dulcamara, woody nightshade.

bittersweet nightshade (noun)	climbing nightshade (noun)
poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America	poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America