pomme de prairie vs Psoralea esculenta

pomme de prairie and Psoralea esculenta both are nouns.

Word	Noun	Adjective	Verb	Adverb
pomme de prairie	Yes	No	No	No
Psoralea esculenta	Yes	No	No	No

As nouns, pomme de prairie and Psoralea esculenta are synonyms defined as:

pomme de prairie and Psoralea esculenta: densely hairy perennial of central North America having edible tuberous roots

Other synonyms of pomme de prairie include breadroot, Indian breadroot, pomme blanche.

pomme de prairie (noun)	Psoralea esculenta (noun)
densely hairy perennial of central North America having edible tuberous roots	densely hairy perennial of central North America having edible tuberous roots