medicinal drug vs medicament

medicinal drug and medicament both are nouns.

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

As nouns, medicinal drug and medicament are synonyms defined as:

medicinal drug and medicament: (medicine) something that treats or prevents or alleviates the symptoms of disease

Other synonyms of medicinal drug include medication, medicine.

medicinal drug (noun)	medicament (noun)
(medicine) something that treats or prevents or alleviates the symptoms of disease	(medicine) something that treats or prevents or alleviates the symptoms of disease