potassium acid carbonate vs potassium bicarbonate

potassium acid carbonate and potassium bicarbonate both are nouns.

Word	Noun	Adjective	Verb	Adverb
potassium acid carbonate	Yes	No	No	No
potassium bicarbonate	Yes	No	No	No

As nouns, potassium acid carbonate and potassium bicarbonate are synonyms defined as:

potassium acid carbonate and potassium bicarbonate: a crystalline salt (KHCO3) that is used in baking powder and as an antacid

Other synonyms of potassium acid carbonate include potassium hydrogen carbonate.

potassium acid carbonate (noun)	potassium bicarbonate (noun)
a crystalline salt (KHCO3) that is used in baking powder and as an antacid	a crystalline salt (KHCO3) that is used in baking powder and as an antacid