muskat vs vinifera grape

muskat and vinifera grape both are nouns.

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

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

muskat: any of several cultivated grapevines that produce sweet white grapes
vinifera grape: common European grape cultivated in many varieties; chief source of Old World wine and table grapes

Other hypernyms of muskat include common grape vine, vinifera, Vitis vinifera.

muskat (noun)	vinifera grape (noun)
any of several cultivated grapevines that produce sweet white grapes	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