corn whiskey vs whisky

corn whiskey and whisky both are nouns.

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

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

corn whiskey: whiskey distilled from a mash of not less than 80 percent corn
whisky: a liquor made from fermented mash of grain

Other hypernyms of corn whiskey include whiskey.

corn whiskey (noun)	whisky (noun)
whiskey distilled from a mash of not less than 80 percent corn	a liquor made from fermented mash of grain