sodium hydrogen carbonate vs bicarbonate of soda

sodium hydrogen carbonate and bicarbonate of soda both are nouns.

Word	Noun	Adjective	Verb	Adverb
sodium hydrogen carbonate	Yes	No	No	No
bicarbonate of soda	Yes	No	No	No

As nouns, sodium hydrogen carbonate and bicarbonate of soda are synonyms defined as:

sodium hydrogen carbonate and bicarbonate of soda: a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid

Other synonyms of sodium hydrogen carbonate include baking soda, saleratus, sodium bicarbonate.

sodium hydrogen carbonate (noun)	bicarbonate of soda (noun)
a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid	a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid