We seem to have a decently diverse population on dream views, so I figured this is as good a place as any to ask what people call a carbonated drink. This is mostly just because I am curious to see what the different answers are, this is a pretty cool topic to me. ;)
In the United States the most popular terms are pop and soda. Pop is the common term where I live, and is indeed the one I use, but soda is a little more common, it seems to be the main term on both the populous west and east coasts of our country. Most of my friends who live far from me in the U.S. call it soda. Soda-pop is a thing, too, but it seems to be dated. If you say soda-pop in the U.S. now, you are probably at least 60 years old (obviously there are exceptions to all these rules). I have also heard that coke is a pretty popular term for pop, but I haven't had the experience of knowing people who use it myself. Apparently it is the main word for it in parts of the southern United States, but even my friends from the south called it soda. I have no idea what other English-speaking countries call pop, but I would guess that they use one of the first three terms I mentioned. (I would be happy to be wrong about that - if so please correct me!)
In Korea the generic term for a soft drink is 소다 (soda), but that word is rarely used. Usually they refer to the drink more specifically, calling Coca-Cola/Pepsi type drinks 콜라 (cola), and Sprite/7up type drinks 사이다 (cider). Usually they will drink one of these two things, but if it is a different soft drink they will often mention it by the specific name/brand. (Also they don't have or even like root beer. Is root beer mostly just an American thing?)
So in your culture, or another culture/language you know of, what do you call a carbonated drink? This seems to be one of the most flexible words across cultures.