rose pink vs marsh pink

rose pink and marsh pink both are nouns.

Word	Noun	Adjective	Verb	Adverb
rose pink	Yes	No	No	No
marsh pink	Yes	No	No	No

As nouns, rose pink and marsh pink are synonyms defined as:

rose pink and marsh pink: 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, Sabbatia Angularis, Sabbatia stellaris.

rose pink (noun)	marsh pink (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