sulfanilamide vs sulpha

sulfanilamide and sulpha both are nouns.

Word	Noun	Adjective	Verb	Adverb
sulfanilamide	Yes	No	No	No
sulpha	Yes	No	No	No

As nouns, sulpha is a hypernym of sulfanilamide; that is, sulpha is a word with a broader meaning than sulfanilamide:

sulfanilamide: a white odorless crystalline sulfa drug; the parent compound of most of the sulfa drugs
sulpha: antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA

Other hypernyms of sulfanilamide include sulfa, sulfa drug, sulfonamide.

sulfanilamide (noun)	sulpha (noun)
a white odorless crystalline sulfa drug; the parent compound of most of the sulfa drugs	antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA