metharbital vs anticonvulsant

metharbital and anticonvulsant both are nouns.

Word	Noun	Adjective	Verb	Adverb
metharbital	Yes	No	No	No
anticonvulsant	Yes	No	No	No

As nouns, anticonvulsant is a hypernym of metharbital; that is, anticonvulsant is a word with a broader meaning than metharbital:

metharbital: anticonvulsant drug (trade name Gemonil) used in the treatment of epilepsy
anticonvulsant: a drug used to treat or prevent convulsions (as in epilepsy)

Other hypernyms of metharbital include anticonvulsant drug, antiepileptic, antiepileptic drug.

metharbital (noun)	anticonvulsant (noun)
anticonvulsant drug (trade name Gemonil) used in the treatment of epilepsy	a drug used to treat or prevent convulsions (as in epilepsy)