novobiocin vs antibiotic drug

novobiocin and antibiotic drug both are nouns.

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

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

novobiocin: an antibiotic obtained from an actinomycete and used to treat infections by Gram-positive bacteria
antibiotic drug: a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections

Other hypernyms of novobiocin include antibiotic.

novobiocin (noun)	antibiotic drug (noun)
an antibiotic obtained from an actinomycete and used to treat infections by Gram-positive bacteria	a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections