isoniazid vs antibacterial drug

isoniazid and antibacterial drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
isoniazid	Yes	No	No	No
antibacterial drug	Yes	No	No	No

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

isoniazid: antibacterial drug (trade name Nydrazid) used to treat tuberculosis
antibacterial drug: any drug that destroys bacteria or inhibits their growth

Other hypernyms of isoniazid include antibacterial, bactericide.

isoniazid (noun)	antibacterial drug (noun)
antibacterial drug (trade name Nydrazid) used to treat tuberculosis	any drug that destroys bacteria or inhibits their growth