antiviral vs medicament

antiviral and medicament both are nouns.

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

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

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

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

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

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