isoniazid vs bactericide

isoniazid and bactericide both are nouns.

Word	Noun	Adjective	Verb	Adverb
isoniazid	Yes	No	No	No
bactericide	Yes	No	No	No

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

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

Other hypernyms of isoniazid include antibacterial, antibacterial drug.

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