Scotch whisky vs Scotch whiskey

Scotch whisky and Scotch whiskey both are nouns.

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

As nouns, Scotch whisky and Scotch whiskey are synonyms defined as:

Scotch whisky and Scotch whiskey: whiskey distilled in Scotland; especially whiskey made from malted barley in a pot still

Other synonyms of Scotch whisky include malt whiskey, malt whisky, Scotch, Scotch malt whiskey, Scotch malt whisky.

Scotch whisky (noun)	Scotch whiskey (noun)
whiskey distilled in Scotland; especially whiskey made from malted barley in a pot still	whiskey distilled in Scotland; especially whiskey made from malted barley in a pot still