purple virgin's bower vs mountain clematis

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

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

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

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

Other synonyms of purple virgin's bower include Clematis verticillaris, purple clematis.

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