Gentianella quinquefolia vs stiff gentian

Gentianella quinquefolia and stiff gentian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gentianella quinquefolia	Yes	No	No	No
stiff gentian	Yes	No	No	No

As nouns, Gentianella quinquefolia and stiff gentian are synonyms defined as:

Gentianella quinquefolia and stiff gentian: gentian of eastern North America having clusters of bristly blue flowers

Other synonyms of Gentianella quinquefolia include ague weed, agueweed, five-flowered gentian, Gentiana quinquefolia.

Gentianella quinquefolia (noun)	stiff gentian (noun)
gentian of eastern North America having clusters of bristly blue flowers	gentian of eastern North America having clusters of bristly blue flowers