"soda" in the noun sense
1. sodium carbonate, washing soda, sal soda, soda ash, soda
a sodium salt of carbonic acid used in making soap powders and glass and paper
2. pop, soda, soda pop, soda water, tonic
a sweet drink containing carbonated water and flavoring
"in New England they call sodas tonics"
Source: WordNet® (An amazing lexical database of English)
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