Nebcin vs antibiotic drug

Nebcin and antibiotic drug both are nouns.

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

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

Nebcin: an antibiotic (trade name Nebcin) that is especially effective against Gram-negative bacteria
antibiotic drug: a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections

Other hypernyms of Nebcin include antibiotic.

Nebcin (noun)	antibiotic drug (noun)
an antibiotic (trade name Nebcin) that is especially effective against Gram-negative bacteria	a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections