medicine vs medicate

medicine is a noun but medicate is not a noun.

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

As verbs, medicine and medicate are synonyms defined as:

medicine (noun)	medicate (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

medicine (verb)	medicate (verb)
treat medicinally, treat with medicine	treat medicinally, treat with medicine
	impregnate with a medicinal substance