sulfadiazine vs sulfonamide

sulfadiazine and sulfonamide both are nouns.

Word	Noun	Adjective	Verb	Adverb
sulfadiazine	Yes	No	No	No
sulfonamide	Yes	No	No	No

As nouns, sulfonamide is a hypernym of sulfadiazine; that is, sulfonamide is a word with a broader meaning than sulfadiazine:

sulfadiazine: a sulfa drug used in treating meningitis and pneumonia and other infections
sulfonamide: antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA

Other hypernyms of sulfadiazine include sulfa, sulfa drug, sulpha.

sulfadiazine (noun)	sulfonamide (noun)
a sulfa drug used in treating meningitis and pneumonia and other infections	antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA