antiviral vs medication

antiviral and medication both are nouns.

Word	Noun	Adjective	Verb	Adverb
antiviral	Yes	Yes	No	No
medication	Yes	No	No	No

As nouns, medication is a hypernym of antiviral; that is, medication is a word with a broader meaning than antiviral:

antiviral: any drug that destroys viruses
medication: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of antiviral include medicament, medicinal drug, medicine.

antiviral (noun)	medication (noun)
any drug that destroys viruses	the act of treating with medicines or remedies
	(medicine) something that treats or prevents or alleviates the symptoms of disease

antiviral (adjective)	medication (adjective)
inhibiting or stopping the growth and reproduction of viruses