china pink vs Dianthus chinensis

china pink and Dianthus chinensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
china pink	Yes	No	No	No
Dianthus chinensis	Yes	No	No	No

As nouns, china pink and Dianthus chinensis are synonyms defined as:

china pink and Dianthus chinensis: Chinese pink with deeply toothed rose-lilac flowers with a purplish eye; usually raised as an annual

Other synonyms of china pink include rainbow pink.

china pink (noun)	Dianthus chinensis (noun)
Chinese pink with deeply toothed rose-lilac flowers with a purplish eye; usually raised as an annual	Chinese pink with deeply toothed rose-lilac flowers with a purplish eye; usually raised as an annual