marsh gentian vs calathian violet

marsh gentian and calathian violet both are nouns.

Word	Noun	Adjective	Verb	Adverb
marsh gentian	Yes	No	No	No
calathian violet	Yes	No	No	No

As nouns, marsh gentian and calathian violet are synonyms defined as:

marsh gentian and calathian violet: perennial Eurasian gentian with sky-blue funnel-shaped flowers of damp open heaths

Other synonyms of marsh gentian include Gentiana pneumonanthe.

marsh gentian (noun)	calathian violet (noun)
perennial Eurasian gentian with sky-blue funnel-shaped flowers of damp open heaths	perennial Eurasian gentian with sky-blue funnel-shaped flowers of damp open heaths