Note that the current descriptions aren't symmetrical:
a type of distilled alcoholic beverage made from fermented grain mash. Various grains (which may be malted) are used for different varieties,
For questions relating to the subject of whisky. (Primarily Scotch, Canadian, and Japanese whisky.)
The second correctly notes that the "…ky" spelling is used for Scotch, Canadian, and Japanese whiskies. This is not at all like the situation of "color" versus "colour" spellings; the spelling must match the origin of the drink, and is not simply an author's preferred spelling.
The first is a generic description, not saying that the "..key" spelling is used for Bourbon and Irish whiskeys.
Both are good ideas (so many other tags don't have any descriptions at all), but as they stand they don't complement each other.
But I think it unlikely that anyone would have a question about Canadian and Scotch while excluding Bourbon. So while the "whisky" definition is good, I'd say there is really no need for such a specific tag.
The only question is which one to use as the real name and which as the alias?