practice of medicine vs nurse

practice of medicine and nurse both are nouns.

Word	Noun	Adjective	Verb	Adverb
practice of medicine	Yes	No	No	No
nurse	Yes	No	Yes	No

practice of medicine (noun)	nurse (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	one skilled in caring for young children or the sick (usually under the supervision of a physician)
	a woman who is the custodian of children

practice of medicine (verb)	nurse (verb)
	try to cure by special care of treatment, of an illness or injury
	give suck to
	maintain (a theory, thoughts, or feelings)
	serve as a nurse; care for sick or handicapped people
	treat carefully