antidiabetic vs DiaBeta

antidiabetic and DiaBeta both are nouns.

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

As nouns, DiaBeta is a hyponym of antidiabetic; that is, DiaBeta is a word with a more specific, narrower meaning than antidiabetic:

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

Other hyponyms of antidiabetic include glipizide, Glucotrol, glyburide, Micronase, Glucophage, metformin, sulfonylurea.

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