anticonvulsant vs anticonvulsant drug

anticonvulsant and anticonvulsant drug both are nouns.

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

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

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

Other synonyms of anticonvulsant include antiepileptic, antiepileptic drug.

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