bottle gentian vs closed gentian

bottle gentian and closed gentian both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottle gentian	Yes	No	No	No
closed gentian	Yes	No	No	No

As nouns, bottle gentian and closed gentian are synonyms defined as:

bottle gentian and closed gentian: gentian of eastern North America having tubular blue or white flowers that open little if at all

Other synonyms of bottle gentian include blind gentian, Gentiana andrewsii.

bottle gentian (noun)	closed gentian (noun)
gentian of eastern North America having tubular blue or white flowers that open little if at all	gentian of eastern North America having tubular blue or white flowers that open little if at all
	similar to Gentiana andrewsii but with larger flowers