maiden pink vs Dianthus deltoides

maiden pink and Dianthus deltoides both are nouns.

Word	Noun	Adjective	Verb	Adverb
maiden pink	Yes	No	No	No
Dianthus deltoides	Yes	No	No	No

As nouns, maiden pink and Dianthus deltoides are synonyms defined as:

maiden pink and Dianthus deltoides: low-growing loosely mat-forming Eurasian pink with a single pale pink flower with a crimson center

maiden pink (noun)	Dianthus deltoides (noun)
low-growing loosely mat-forming Eurasian pink with a single pale pink flower with a crimson center	low-growing loosely mat-forming Eurasian pink with a single pale pink flower with a crimson center