Swertia perennia vs marsh felwort

Swertia perennia and marsh felwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
Swertia perennia	Yes	No	No	No
marsh felwort	Yes	No	No	No

As nouns, Swertia perennia and marsh felwort are synonyms defined as:

Swertia perennia and marsh felwort: perennial of damp places in mountains of Eurasia and North America having dull-colored blue or violet flowers

Swertia perennia (noun)	marsh felwort (noun)
perennial of damp places in mountains of Eurasia and North America having dull-colored blue or violet flowers	perennial of damp places in mountains of Eurasia and North America having dull-colored blue or violet flowers