Muscadet vs white wine

Muscadet and white wine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Muscadet	Yes	No	No	No
white wine	Yes	No	No	No

As nouns, white wine is a hypernym of Muscadet; that is, white wine is a word with a broader meaning than Muscadet:

Muscadet: dry white wine from the Loire valley in France
white wine: pale yellowish wine made from white grapes or red grapes with skins removed before fermentation

Muscadet (noun)	white wine (noun)
dry white wine from the Loire valley in France	pale yellowish wine made from white grapes or red grapes with skins removed before fermentation
white grape grown especially in the valley the Loire in France