Japanese bittersweet vs vine

Japanese bittersweet and vine both are nouns.

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

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

Japanese 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

Japanese 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