Vincetoxicum negrum vs negro vine

Vincetoxicum negrum and negro vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vincetoxicum negrum	Yes	No	No	No
negro vine	Yes	No	No	No

As nouns, Vincetoxicum negrum and negro vine are synonyms defined as:

Vincetoxicum negrum and negro vine: twining vine with hairy foliage and dark purplish-brown flowers

Other synonyms of Vincetoxicum negrum include Vincetoxicum hirsutum.

Vincetoxicum negrum (noun)	negro vine (noun)
twining vine with hairy foliage and dark purplish-brown flowers	twining vine with hairy foliage and dark purplish-brown flowers