earth-nut pea vs Lathyrus tuberosus

earth-nut pea and Lathyrus tuberosus both are nouns.

Word	Noun	Adjective	Verb	Adverb
earth-nut pea	Yes	No	No	No
Lathyrus tuberosus	Yes	No	No	No

As nouns, earth-nut pea and Lathyrus tuberosus are synonyms defined as:

earth-nut pea and Lathyrus tuberosus: European herb bearing small tubers used for food and in Scotland to flavor whiskey

Other synonyms of earth-nut pea include earthnut pea, heath pea, tuberous vetch.

earth-nut pea (noun)	Lathyrus tuberosus (noun)
European herb bearing small tubers used for food and in Scotland to flavor whiskey	European herb bearing small tubers used for food and in Scotland to flavor whiskey