Clematis versicolor vs leather flower

Clematis versicolor and leather flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
Clematis versicolor	Yes	No	No	No
leather flower	Yes	No	No	No

As nouns, Clematis versicolor and leather flower are synonyms defined as:

Clematis versicolor and leather flower: woody vine of the southern United States having purple or blue flowers with leathery recurved sepals

Clematis versicolor (noun)	leather flower (noun)
woody vine of the southern United States having purple or blue flowers with leathery recurved sepals	woody vine of the southern United States having purple or blue flowers with leathery recurved sepals
	scandent subshrub of southeastern United States having large red-purple bell-shaped flowers with leathery recurved sepals