amobarbital vs Amytal

amobarbital and Amytal both are nouns.

Word	Noun	Adjective	Verb	Adverb
amobarbital	Yes	No	No	No
Amytal	Yes	No	No	No

As nouns, Amytal is a hyponym of amobarbital; that is, Amytal is a word with a more specific, narrower meaning than amobarbital:

amobarbital: a barbiturate with sedative and hypnotic effects; used to relieve insomnia and as an anticonvulsant
Amytal: the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic

Other hyponyms of amobarbital include amobarbital sodium, blue, blue angel, blue devil.

amobarbital (noun)	Amytal (noun)
a barbiturate with sedative and hypnotic effects; used to relieve insomnia and as an anticonvulsant	the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic