Virazole vs antiviral agent

Virazole and antiviral agent both are nouns.

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

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

Virazole: an inhaled antiviral agent (trade name Virazole) that may be used to treat serious virus infections
antiviral agent: any drug that destroys viruses

Other hypernyms of Virazole include antiviral, antiviral drug.

Virazole (noun)	antiviral agent (noun)
an inhaled antiviral agent (trade name Virazole) that may be used to treat serious virus infections	any drug that destroys viruses