medicinal vs medicine

medicinal is not a noun while medicine is a noun.

Word	Noun	Adjective	Verb	Adverb
medicinal	No	Yes	No	No
medicine	Yes	No	Yes	No

medicinal (noun)	medicine (noun)
	the learned profession that is mastered by graduate training in a medical school and that is devoted to preventing or alleviating or curing diseases and injuries
	punishment for one's actions
	(medicine) something that treats or prevents or alleviates the symptoms of disease
	the branches of medical science that deal with nonsurgical techniques

medicinal (adjective)	medicine (adjective)
having the properties of medicine

medicinal (verb)	medicine (verb)
	treat medicinally, treat with medicine