carbonated water vs soda water

carbonated water and soda water both are nouns.

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

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

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

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

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