care for vs medicine

care for is not a noun while medicine is a noun.

Word	Noun	Adjective	Verb	Adverb
care for	No	No	Yes	No
medicine	Yes	No	Yes	No

As verbs, medicine is a hyponym of care for; that is, medicine is a word with a more specific, narrower meaning than care for:

care for (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

care for (verb)	medicine (verb)
provide treatment for	treat medicinally, treat with medicine
have a liking, fondness, or taste (for)
be fond of; be attached to