Fizzy drinks Vs Carbonated water

[Haroon]

Hi,
Which one is more sophisticated related to usage:
Fizzy drinks - carbonated water - soft drinks ?
Is there any indication of reginal usage?
Thanks in advance

 

[JulianStuart]

For a WRF thread see here Soda, Pop, Cola, Coke
For fizzy see here Water with/without gas, sparkling, fizzy, ...
For a range of maps covering "regional" aspects of naming choices in the US see here 22 Maps That Show How Americans Speak English Totally Differently From One Another