Effervescent waters are sparkling mineral waters that contain dissolved carbon dioxide. These fizzy beverages are often enjoyed as refreshing drinks and are commonly used as mixers in cocktails and mocktails. There are several synonyms for effervescent waters, including carbonated water, sparkling water, seltzer, club soda, and tonic water. Carbonated water is a general term that refers to any water that has been infused with carbon dioxide. Sparkling water is another term that is often used to describe carbonated water. Seltzer is a type of carbonated water that is unflavored, while club soda contains added minerals and salts. Tonic water is another type of effervescent water that contains quinine and is commonly used in mixed drinks.