wild sweet potato vine vs wild potato vine

wild sweet potato vine and wild potato vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild sweet potato vine	Yes	No	No	No
wild potato vine	Yes	No	No	No

As nouns, wild sweet potato vine and wild potato vine are synonyms defined as:

wild sweet potato vine and wild potato vine: tropical American prostrate or climbing herbaceous perennial having an enormous starchy root; sometimes held to be source of the sweet potato

Other synonyms of wild sweet potato vine include Ipomoea fastigiata, Ipomoea panurata, man-of-the-earth, manroot, scammonyroot.

wild sweet potato vine (noun)	wild potato vine (noun)
tropical American prostrate or climbing herbaceous perennial having an enormous starchy root; sometimes held to be source of the sweet potato	tropical American prostrate or climbing herbaceous perennial having an enormous starchy root; sometimes held to be source of the sweet potato