Scotch whiskey vs whiskey

Scotch whiskey and whiskey both are nouns.

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

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

Scotch 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 Scotch whiskey include whisky.

Scotch 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