dicloxacillin vs bactericide

dicloxacillin and bactericide both are nouns.

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

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

dicloxacillin: antibacterial (trade name Dynapen) used to treat staphylococcal infections that are resistant to penicillin
bactericide: any drug that destroys bacteria or inhibits their growth

Other hypernyms of dicloxacillin include antibacterial, antibacterial drug.

dicloxacillin (noun)	bactericide (noun)
antibacterial (trade name Dynapen) used to treat staphylococcal infections that are resistant to penicillin	any drug that destroys bacteria or inhibits their growth
	any chemical agent that destroys bacteria