sour mash vs whisky

sour mash and whisky both are nouns.

Word	Noun	Adjective	Verb	Adverb
sour mash	Yes	No	No	No
whisky	Yes	No	No	No

As nouns, whisky is a hypernym of sour mash; that is, whisky is a word with a broader meaning than sour mash:

Other hypernyms of sour mash include whiskey.

sour mash (noun)	whisky (noun)
any whiskey distilled from sour mash	a liquor made from fermented mash of grain
a mash with optimum acidity for yeast fermentation; a mixture of old and new mash; used in distilling some whiskeys