Greek valerian vs Polemonium van-bruntiae

Greek valerian and Polemonium van-bruntiae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Greek valerian	Yes	No	No	No
Polemonium van-bruntiae	Yes	No	No	No

As nouns, Greek valerian and Polemonium van-bruntiae are synonyms defined as:

Greek valerian and Polemonium van-bruntiae: pinnate-leaved European perennial having bright blue or white flowers

Other synonyms of Greek valerian include charity, Jacob's ladder, Polemonium caeruleum, Polymonium caeruleum van-bruntiae.

Greek valerian (noun)	Polemonium van-bruntiae (noun)
pinnate-leaved European perennial having bright blue or white flowers	pinnate-leaved European perennial having bright blue or white flowers
erect or spreading perennial of the eastern United States