mountain clematis vs purple virgin's bower

mountain clematis and purple virgin's bower both are nouns.

Word	Noun	Adjective	Verb	Adverb
mountain clematis	Yes	No	No	No
purple virgin's bower	Yes	No	No	No

As nouns, mountain clematis and purple virgin's bower are synonyms defined as:

mountain clematis and purple virgin's bower: climber of northeastern North America having waxy purplish-blue flowers

Other synonyms of mountain clematis include Clematis verticillaris, purple clematis.

mountain clematis (noun)	purple virgin's bower (noun)
climber of northeastern North America having waxy purplish-blue flowers	climber of northeastern North America having waxy purplish-blue flowers