Baptisia lactea vs white false indigo

Baptisia lactea and white false indigo both are nouns.

Word	Noun	Adjective	Verb	Adverb
Baptisia lactea	Yes	No	No	No
white false indigo	Yes	No	No	No

As nouns, Baptisia lactea and white false indigo are synonyms defined as:

Baptisia lactea and white false indigo: erect or spreading herb having racemes of creamy white flowers; the eastern United States

Baptisia lactea (noun)	white false indigo (noun)
erect or spreading herb having racemes of creamy white flowers; the eastern United States	erect or spreading herb having racemes of creamy white flowers; the eastern United States