carbonated water

carbonated water (countable and uncountable, plural carbonated waters)

2. (idiomatic) Water that contains carbon dioxide dissolved in it under pressure and is intended for drinking.

   Synonyms: fizzy water, sparkling water, sparkling, soda water, soda, seltzer water, seltzer, bubble water

   Antonyms: still water, still, flat water, flat, tap water

   Near-synonym: (broadly synonymous) club soda

3. Used other than figuratively or idiomatically: see carbonated,‎ water.

Among the synonyms and near-synonyms, differentiation varies by speaker or writer. Water with carbonation sometimes occurs naturally (as some mineral waters are naturally carbonated), but the collocation carbonated water in normal contexts (and without further specification) means such water serving as a beverage or an ingredient thereof.

• mineral water