jailor vs keeper

jailor and keeper both are nouns.

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

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

Other hypernyms of jailor include law officer, lawman, peace officer.

jailor (noun)	keeper (noun)
someone who guards prisoners	one having charge of buildings or grounds or animals
	someone in charge of other people