simvastatin vs statin drug

simvastatin and statin drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
simvastatin	Yes	No	No	No
statin drug	Yes	No	No	No

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

simvastatin: an oral lipid-lowering medicine (trade name Zocor) administered to reduce blood cholesterol levels; recommended after heart attacks
statin drug: a medicine that lowers blood cholesterol levels by inhibiting HMG-CoA reductase

Other hypernyms of simvastatin include lipid-lowering medication, lipid-lowering medicine, statin.

simvastatin (noun)	statin drug (noun)
an oral lipid-lowering medicine (trade name Zocor) administered to reduce blood cholesterol levels; recommended after heart attacks	a medicine that lowers blood cholesterol levels by inhibiting HMG-CoA reductase