Antiviral agent and Medicinal drug

Antiviral agent noun - Any drug that destroys viruses.

Medicinal drug and antiviral agent are semantically related. In some cases you can use "Medicinal drug" instead a noun phrase "Antiviral agent".

Medicinal drug noun - (medicine) something that treats or prevents or alleviates the symptoms of disease.

Antiviral agent and medicinal drug are semantically related. Sometimes you can replace phrase "Antiviral agent" with "Medicinal drug", this phrases are similar.