soda water vs carbonated water

soda water and carbonated water both are nouns.

Word	Noun	Adjective	Verb	Adverb
soda water	Yes	No	No	No
carbonated water	Yes	No	No	No

As nouns, soda water and carbonated water are synonyms defined as:

soda water and carbonated water: effervescent beverage artificially charged with carbon dioxide

Other synonyms of soda water include club soda, seltzer, sparkling water.

soda water (noun)	carbonated water (noun)
effervescent beverage artificially charged with carbon dioxide	effervescent beverage artificially charged with carbon dioxide
a sweet drink containing carbonated water and flavoring