Carboxylate is a term commonly used in chemistry that refers to the salt or ester of a carboxylic acid. There are various synonyms used in chemistry to refer to carboxylate. Some of the common synonyms include carboxylic salt, carboxylic anion, carboxyl group, and carboxylic acid. These synonyms represent different forms and structures of carboxylate that are used in different types of chemical reactions. Some of the other synonyms for carboxylate include carboxylate ion, carboxylic acid derivatives, carboxyl group derivatives, and carboxylate esters. Each of these synonyms plays a significant role in different reactions in the field of chemistry.