sal soda(n = noun.substance) soda, soda ash, sodium carbonate, washing soda - a sodium salt of carbonic acid; used in making soap powders and glass and paper;
is a kind of salt

baking soda, benzoate of soda, bicarbonate of soda, caustic soda, club soda, cream soda, ice-cream soda, irish soda bread, orange soda, sal, sal ammoniac, sal volatile, salsola soda, scotch and soda, soda, soda ash, soda biscuit, soda bottle, soda bread, soda can, soda cracker, soda fountain, soda jerk, soda jerker, soda lime, soda niter, soda pop, soda water, washing soda