Vitis labrusca vs Vitis

Vitis labrusca and Vitis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vitis labrusca	Yes	No	No	No
Vitis	Yes	No	No	No

Vitis labrusca (noun)	Vitis (noun)
native grape of northeastern United States; origin of many cultivated varieties e.g. Concord grapes	the type genus of the family Vitaceae; woody vines with simple leaves and small flowers; includes a wide variety of grapes