barbital vs diethylbarbituric acid

barbital and diethylbarbituric acid both are nouns.

Word	Noun	Adjective	Verb	Adverb
barbital	Yes	No	No	No
diethylbarbituric acid	Yes	No	No	No

As nouns, barbital and diethylbarbituric acid are synonyms defined as:

Other synonyms of barbital include barbitone, diethylmalonylurea, veronal.

barbital (noun)	diethylbarbituric acid (noun)
a barbiturate used as a hypnotic	a barbiturate used as a hypnotic