gabapentin vs anticonvulsant

gabapentin and anticonvulsant both are nouns.

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

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

gabapentin: an anticonvulsant (trade name Neurontin) used to control some types of seizures in the treatment of epilepsy; also used to manage neuralgia caused by shingles
anticonvulsant: a drug used to treat or prevent convulsions (as in epilepsy)

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

gabapentin (noun)	anticonvulsant (noun)
an anticonvulsant (trade name Neurontin) used to control some types of seizures in the treatment of epilepsy; also used to manage neuralgia caused by shingles	a drug used to treat or prevent convulsions (as in epilepsy)