rose pink vs Sabbatia stellaris

rose pink and Sabbatia stellaris both are nouns.

Word	Noun	Adjective	Verb	Adverb
rose pink	Yes	No	No	No
Sabbatia stellaris	Yes	No	No	No

As nouns, rose pink and Sabbatia stellaris are synonyms defined as:

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

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

rose pink (noun)	Sabbatia stellaris (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