bitter floom vs Sabbatia Angularis

bitter floom and Sabbatia Angularis both are nouns.

Word	Noun	Adjective	Verb	Adverb
bitter floom	Yes	No	No	No
Sabbatia Angularis	Yes	No	No	No

As nouns, bitter floom and Sabbatia Angularis are synonyms defined as:

bitter floom and Sabbatia Angularis: any of several pink-flowered marsh plant of the eastern United States resembling a true centaury

Other synonyms of bitter floom include American centaury, marsh pink, rose pink, Sabbatia stellaris.

bitter floom (noun)	Sabbatia Angularis (noun)
any of several pink-flowered marsh plant of the eastern United States resembling a true centaury	any of several pink-flowered marsh plant of the eastern United States resembling a true centaury