conservator vs keeper

conservator and keeper both are nouns.

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

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

Other hypernyms of conservator include custodian, steward.

conservator (noun)	keeper (noun)
the custodian of a collection (as a museum or library)	one having charge of buildings or grounds or animals
someone appointed by a court to assume responsibility for the interests of a minor or incompetent person	someone in charge of other people