The title is pretty self explanatory.
"Soda", "Pop", "Coke", etc. all refer to the same thing in different parts of the world.
Where the word for soft drink is "soda", "pop" is a verb, and "Coke" is only a brand.
But what does "soda" mean in places where the beverage is called "pop" (or something else)?
Does it have any meaning at all?