penicillamine vs medicinal drug

penicillamine and medicinal drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
penicillamine	Yes	No	No	No
medicinal drug	Yes	No	No	No

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

penicillamine: a drug (trade name Cuprimine) used to treat heavy metal poisoning and Wilson's disease and severe arthritis
medicinal drug: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of penicillamine include medicament, medication, medicine.

penicillamine (noun)	medicinal drug (noun)
a drug (trade name Cuprimine) used to treat heavy metal poisoning and Wilson's disease and severe arthritis	(medicine) something that treats or prevents or alleviates the symptoms of disease