muscat vs vinifera grape

muscat and vinifera grape both are nouns.

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

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

muscat: sweet aromatic grape used for raisins and wine
vinifera grape: grape from a cultivated variety of the common grape vine of Europe

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

muscat: 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 muscat include common grape vine, vinifera, Vitis vinifera.

muscat (noun)	vinifera grape (noun)
sweet aromatic grape used for raisins and wine	grape from a cultivated variety of the common grape vine of Europe
wine from muscat grapes	common European grape cultivated in many varieties; chief source of Old World wine and table grapes
any of several cultivated grapevines that produce sweet white grapes