Baking soda is a versatile ingredient that has a variety of uses in the kitchen and around the home. If you don't have any baking soda on hand, there are several synonyms that can be used instead. Sodium bicarbonate is the scientific name for baking soda, and it can often be found under that name in specialty stores or online. Other synonyms include bicarbonate of soda, bread soda and cooking soda. These options can be used interchangeably in recipes, and can also be used for cleaning and other household uses. If you're ever in a pinch, any of these synonyms can make a good replacement for baking soda.