Vigna sinensis vs black-eyed pea

Vigna sinensis and black-eyed pea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vigna sinensis	Yes	No	No	No
black-eyed pea	Yes	No	No	No

As nouns, Vigna sinensis and black-eyed pea are synonyms defined as:

Vigna sinensis and black-eyed pea: sprawling Old World annual cultivated especially in southern United States for food and forage and green manure

Other synonyms of Vigna sinensis include cowpea, cowpea plant, Vigna unguiculata.

Vigna sinensis (noun)	black-eyed pea (noun)
sprawling Old World annual cultivated especially in southern United States for food and forage and green manure	eaten fresh as shell beans or dried
	sprawling Old World annual cultivated especially in southern United States for food and forage and green manure
	fruit or seed of the cowpea plant