sulfapyridine vs sulfa

sulfapyridine and sulfa both are nouns.

Word	Noun	Adjective	Verb	Adverb
sulfapyridine	Yes	No	No	No
sulfa	Yes	No	No	No

As nouns, sulfa is a hypernym of sulfapyridine; that is, sulfa is a word with a broader meaning than sulfapyridine:

sulfapyridine: sulfa drug derived from pyridine and sulfanilamide
sulfa: antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA

Other hypernyms of sulfapyridine include sulfa drug, sulfonamide, sulpha.

sulfapyridine (noun)	sulfa (noun)
sulfa drug derived from pyridine and sulfanilamide	antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA