keeper vs nurse

keeper and nurse both are nouns.

Word	Noun	Adjective	Verb	Adverb
keeper	Yes	No	No	No
nurse	Yes	No	Yes	No

As nouns, nurse is a hyponym of keeper; that is, nurse is a word with a more specific, narrower meaning than keeper:

keeper (noun)	nurse (noun)
one having charge of buildings or grounds or animals	one skilled in caring for young children or the sick (usually under the supervision of a physician)
someone in charge of other people	a woman who is the custodian of children

keeper (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