wild potato vine vs wild sweet potato vine

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

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

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

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

wild potato vine (noun)	wild sweet 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