What is the difference between liquor, vodka, rum and whiskey?

When it comes to whiskey, I don’t know what kind of image will appear in everyone’s mind. Maybe it was the black party in the KTV set menu, mixed with green tea? Hmm, no. Or is it a clip from the American country movies in the 1980s, in a small bar in the western United States, American cowboys are smoking a cigar while holding a glass of whiskey, chatting loudly, and drinking? Cool… Could it be that in the 007 series of movies, which beauty he was chatting with on the bar with a glass of whiskey? Or, it could be a big question mark…