wild indigo vs false indigo

wild indigo and false indigo both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild indigo	Yes	No	No	No
false indigo	Yes	No	No	No

As nouns, wild indigo and false indigo are synonyms defined as:

wild indigo and false indigo: any of several plants of the genus Baptisia

wild indigo (noun)	false indigo (noun)
any of several plants of the genus Baptisia	an erect to spreading hairy shrub of the Pacific coast of the United States having racemes of red to indigo flowers
	dense shrub of moist riverbanks and flood plains of the eastern United States having attractive fragrant foliage and dense racemes of dark purple flowers
	any of several plants of the genus Baptisia