Vigna sinensis vs Vigna unguiculata

Vigna sinensis and Vigna unguiculata both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vigna sinensis	Yes	No	No	No
Vigna unguiculata	Yes	No	No	No

As nouns, Vigna sinensis and Vigna unguiculata are synonyms defined as:

Vigna sinensis and Vigna unguiculata: sprawling Old World annual cultivated especially in southern United States for food and forage and green manure

Other synonyms of Vigna sinensis include black-eyed pea, cowpea, cowpea plant.

Vigna sinensis (noun)	Vigna unguiculata (noun)
sprawling Old World annual cultivated especially in southern United States for food and forage and green manure	sprawling Old World annual cultivated especially in southern United States for food and forage and green manure