vase vine vs clematis

vase vine and clematis both are nouns.

Word	Noun	Adjective	Verb	Adverb
vase vine	Yes	No	No	No
clematis	Yes	No	No	No

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

vase vine: scandent subshrub of southeastern United States having large red-purple bell-shaped flowers with leathery recurved sepals
clematis: any of various ornamental climbing plants of the genus Clematis usually having showy flowers

vase vine (noun)	clematis (noun)
scandent subshrub of southeastern United States having large red-purple bell-shaped flowers with leathery recurved sepals	any of various ornamental climbing plants of the genus Clematis usually having showy flowers