Zinfandel vs Vitis vinifera

Zinfandel and Vitis vinifera both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zinfandel	Yes	No	No	No
Vitis vinifera	Yes	No	No	No

As nouns, Vitis vinifera is a hypernym of Zinfandel; that is, Vitis vinifera is a word with a broader meaning than Zinfandel:

Zinfandel: small black grape grown chiefly in California; transplanted from Europe
Vitis vinifera: common European grape cultivated in many varieties; chief source of Old World wine and table grapes

Other hypernyms of Zinfandel include common grape vine, vinifera, vinifera grape.

Zinfandel (noun)	Vitis vinifera (noun)
small black grape grown chiefly in California; transplanted from Europe	common European grape cultivated in many varieties; chief source of Old World wine and table grapes