groundnut vs potato bean

groundnut and potato bean both are nouns.

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

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

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

Other synonyms of groundnut include wild bean.

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

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

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

groundnut (noun)	potato bean (noun)
nutlike tuber; important food of Native Americans	nutlike tuber; important food of Native Americans
pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms	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