I moved to Jacksonville, FL to teach, and the cafeteria ladies called everything coke. "We have many kinds of cokes."Our conversion would go like this, "What do you want to drink with your lunch?" "Coke" "Which kind of coke?" "Coke coke. The kind in the red can!"
I started calling it soda. I've called it soda for 25+ years now. It sounds weird to hear it called pop now. Pop is a person not a drink.
And obviously, people have given this a lot of thought. Just look at the maps below.
Here's a pretty general overview.
So what do you call that carbonated beverage in a can?