Scotch whisky vs malt whiskey

Scotch whisky and malt whiskey both are nouns.

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

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

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

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

Scotch whisky (noun)	malt 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