saleratus vs hydrogen carbonate

saleratus and hydrogen carbonate both are nouns.

Word	Noun	Adjective	Verb	Adverb
saleratus	Yes	No	No	No
hydrogen carbonate	Yes	No	No	No

As nouns, hydrogen carbonate is a hypernym of saleratus; that is, hydrogen carbonate is a word with a broader meaning than saleratus:

saleratus: a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid
hydrogen carbonate: a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate

Other hypernyms of saleratus include bicarbonate.

saleratus (noun)	hydrogen carbonate (noun)
a white soluble compound (NaHCO3) used in effervescent drinks and in baking powders and as an antacid	a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced; an acid carbonate