Scotch whiskey vs malt whiskey

Scotch whiskey and malt whiskey both are nouns.

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

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

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

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

Scotch whiskey (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