Fulvicin vs antifungal agent

Fulvicin and antifungal agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fulvicin	Yes	No	No	No
antifungal agent	Yes	No	No	No

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

Fulvicin: a kind of penicillin (a fungicidal antibiotic with the trade name Fulvicin) produced by molds of the genus Penicillium
antifungal agent: any agent that destroys or prevents the growth of fungi

Other hypernyms of Fulvicin include antifungal, antimycotic, antimycotic agent, fungicide, penicillin.

Fulvicin (noun)	antifungal agent (noun)
a kind of penicillin (a fungicidal antibiotic with the trade name Fulvicin) produced by molds of the genus Penicillium	any agent that destroys or prevents the growth of fungi