Mycostatin vs antibiotic drug

Mycostatin and antibiotic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mycostatin	Yes	No	No	No
antibiotic drug	Yes	No	No	No

As nouns, antibiotic drug is a hypernym of Mycostatin; that is, antibiotic drug is a word with a broader meaning than Mycostatin:

Mycostatin: an antifungal and antibiotic (trade names Mycostatin and Nystan) discovered in New York State; derived from soil fungi actinomycetes
antibiotic drug: a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections

Other hypernyms of Mycostatin include antibiotic, antifungal, antifungal agent, antimycotic, antimycotic agent, fungicide.

Mycostatin (noun)	antibiotic drug (noun)
an antifungal and antibiotic (trade names Mycostatin and Nystan) discovered in New York State; derived from soil fungi actinomycetes	a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections