Vincetoxicum hirsutum vs negro vine

Vincetoxicum hirsutum and negro vine both are nouns.

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

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

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

Other synonyms of Vincetoxicum hirsutum include Vincetoxicum negrum.

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