bicarbonate of soda vs sodium hydrogen carbonate

bicarbonate of soda and sodium hydrogen carbonate both are nouns.

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

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

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

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

bicarbonate of soda (noun)	sodium hydrogen carbonate (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