Japan bittersweet vs vine

Japan bittersweet and vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japan bittersweet	Yes	No	No	No
vine	Yes	No	No	No

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

Japan bittersweet: ornamental Asiatic vine with showy orange-yellow fruit with a scarlet aril; naturalized in North America
vine: a plant with a weak stem that derives support from climbing, twining, or creeping along a surface

Japan bittersweet (noun)	vine (noun)
ornamental Asiatic vine with showy orange-yellow fruit with a scarlet aril; naturalized in North America	a plant with a weak stem that derives support from climbing, twining, or creeping along a surface