nux vomica vs medicinal drug

nux vomica and medicinal drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
nux vomica	Yes	No	No	No
medicinal drug	Yes	No	No	No

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

nux vomica: a medicine made from the seeds of an Asiatic tree; contains strychnine and brucine; formerly used as a stimulant
medicinal drug: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other hypernyms of nux vomica include medicament, medication, medicine.

nux vomica (noun)	medicinal drug (noun)
a medicine made from the seeds of an Asiatic tree; contains strychnine and brucine; formerly used as a stimulant	(medicine) something that treats or prevents or alleviates the symptoms of disease