downy yellow violet vs Viola pubescens

downy yellow violet and Viola pubescens both are nouns.

Word	Noun	Adjective	Verb	Adverb
downy yellow violet	Yes	No	No	No
Viola pubescens	Yes	No	No	No

As nouns, downy yellow violet and Viola pubescens are synonyms defined as:

downy yellow violet and Viola pubescens: violet of eastern North America having softly pubescent leaves and stems and clear yellow flowers with brown-purple veins

downy yellow violet (noun)	Viola pubescens (noun)
violet of eastern North America having softly pubescent leaves and stems and clear yellow flowers with brown-purple veins	violet of eastern North America having softly pubescent leaves and stems and clear yellow flowers with brown-purple veins