malt whiskey vs whiskey

malt whiskey and whiskey both are nouns.

Word	Noun	Adjective	Verb	Adverb
malt whiskey	Yes	No	No	No
whiskey	Yes	No	No	No

As nouns, whiskey is a hypernym of malt whiskey; that is, whiskey is a word with a broader meaning than malt whiskey:

malt whiskey: whiskey distilled in Scotland; especially whiskey made from malted barley in a pot still
whiskey: a liquor made from fermented mash of grain

Other hypernyms of malt whiskey include whisky.

malt whiskey (noun)	whiskey (noun)
whiskey distilled in Scotland; especially whiskey made from malted barley in a pot still	a liquor made from fermented mash of grain