wild bean vs potato bean

wild bean and potato bean both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild bean	Yes	No	No	No
potato bean	Yes	No	No	No

As nouns, wild bean and potato bean are synonyms defined as:

wild bean and potato bean: nutlike tuber; important food of Native Americans

Other synonyms of wild bean include groundnut.

As nouns, wild bean and potato bean are synonyms defined as:

wild bean and potato bean: a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans

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

wild bean (noun)	potato bean (noun)
nutlike tuber; important food of Native Americans	nutlike tuber; important food of Native Americans
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
	twining plant of Amazon basin having large edible roots