antiviral agent vs medication

antiviral agent and medication both are nouns.

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

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

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

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

antiviral agent (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