Apios tuberosa vs Apios americana

Apios tuberosa and Apios americana both are nouns.

Word	Noun	Adjective	Verb	Adverb
Apios tuberosa	Yes	No	No	No
Apios americana	Yes	No	No	No

As nouns, Apios tuberosa and Apios americana are synonyms defined as:

Apios tuberosa and Apios americana: a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans

Other synonyms of Apios tuberosa include groundnut, groundnut vine, Indian potato, potato bean, wild bean.

Apios tuberosa (noun)	Apios americana (noun)
a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans	a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans