malvasia vs Vitis vinifera

malvasia and Vitis vinifera both are nouns.

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

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

malvasia: grape used to make malmsey wine
Vitis vinifera: common European grape cultivated in many varieties; chief source of Old World wine and table grapes

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

malvasia (noun)	Vitis vinifera (noun)
grape used to make malmsey wine	common European grape cultivated in many varieties; chief source of Old World wine and table grapes