DiaBeta vs antidiabetic drug

DiaBeta and antidiabetic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
DiaBeta	Yes	No	No	No
antidiabetic drug	Yes	No	No	No

As nouns, antidiabetic drug is a hypernym of DiaBeta; that is, antidiabetic drug is a word with a broader meaning than DiaBeta:

DiaBeta: an oral antidiabetic drug (trade names DiaBeta and Micronase) that stimulates the release of insulin from the pancreas
antidiabetic drug: a drug used to treat diabetes mellitus

Other hypernyms of DiaBeta include antidiabetic.

DiaBeta (noun)	antidiabetic drug (noun)
an oral antidiabetic drug (trade names DiaBeta and Micronase) that stimulates the release of insulin from the pancreas	a drug used to treat diabetes mellitus