rose pink vs bitter floom

rose pink and bitter floom both are nouns.

Word	Noun	Adjective	Verb	Adverb
rose pink	Yes	No	No	No
bitter floom	Yes	No	No	No

As nouns, rose pink and bitter floom are synonyms defined as:

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

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

rose pink (noun)	bitter floom (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