anticonvulsant drug vs antiepileptic

anticonvulsant drug and antiepileptic both are nouns.

Word	Noun	Adjective	Verb	Adverb
anticonvulsant drug	Yes	No	No	No
antiepileptic	Yes	No	No	No

As nouns, anticonvulsant drug and antiepileptic are synonyms defined as:

anticonvulsant drug and antiepileptic: a drug used to treat or prevent convulsions (as in epilepsy)

Other synonyms of anticonvulsant drug include anticonvulsant, antiepileptic drug.

anticonvulsant drug (noun)	antiepileptic (noun)
a drug used to treat or prevent convulsions (as in epilepsy)	a drug used to treat or prevent convulsions (as in epilepsy)