Swertia speciosa vs green gentian

Swertia speciosa and green gentian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Swertia speciosa	Yes	No	No	No
green gentian	Yes	No	No	No

As nouns, Swertia speciosa and green gentian are synonyms defined as:

Swertia speciosa and green gentian: tall herb with panicles of white flowers flushed with green; northwestern United States; sometimes placed in genus Swertia

Other synonyms of Swertia speciosa include Frasera speciosa.

Swertia speciosa (noun)	green gentian (noun)
tall herb with panicles of white flowers flushed with green; northwestern United States; sometimes placed in genus Swertia	tall herb with panicles of white flowers flushed with green; northwestern United States; sometimes placed in genus Swertia