malvasia vs vinifera grape

malvasia and vinifera grape both are nouns.

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

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

malvasia: grape used to make malmsey wine
vinifera grape: 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, Vitis vinifera.

malvasia (noun)	vinifera grape (noun)
grape used to make malmsey wine	grape from a cultivated variety of the common grape vine of Europe
	common European grape cultivated in many varieties; chief source of Old World wine and table grapes