caretaker vs keeper

caretaker and keeper both are nouns.

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

As nouns, keeper is a hypernym of caretaker; that is, keeper is a word with a broader meaning than caretaker:

caretaker: a custodian who is hired to take care of something (property or a person)
keeper: one having charge of buildings or grounds or animals

Other hypernyms of caretaker include custodian, steward.

caretaker (noun)	keeper (noun)
a custodian who is hired to take care of something (property or a person)	one having charge of buildings or grounds or animals
an official who performs the duties of an office temporarily	someone in charge of other people