What you call a soft drink depends upon what part of the country you're in. I was originally from the Midwest, so said "pop," but in Alabama everything is a Coke, even if it's root beer or other soft drink. I learned not to say "pop" in New York, as they misunderstood. I should have said "soda" and what kind. In Florida, where people are from all over, everyone just learns all the terms and go with it.