American ivy vs vine

American ivy and vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
American ivy	Yes	No	No	No
vine	Yes	No	No	No

As nouns, vine is a hypernym of American ivy; that is, vine is a word with a broader meaning than American ivy:

American ivy: common North American vine with compound leaves and bluish-black berrylike fruit
vine: a plant with a weak stem that derives support from climbing, twining, or creeping along a surface

American ivy (noun)	vine (noun)
common North American vine with compound leaves and bluish-black berrylike fruit	a plant with a weak stem that derives support from climbing, twining, or creeping along a surface