misbeliever vs Ishmael

misbeliever and Ishmael both are nouns.

Word	Noun	Adjective	Verb	Adverb
misbeliever	Yes	No	No	No
Ishmael	Yes	No	No	No

As nouns, Ishmael is a hypernym of misbeliever; that is, Ishmael is a word with a broader meaning than misbeliever:

misbeliever: a person who holds religious beliefs in conflict with the dogma of the Roman Catholic Church
Ishmael: a person who is rejected (from society or home)

Other hypernyms of misbeliever include castaway, outcast, pariah.

misbeliever (noun)	Ishmael (noun)
a person who holds religious beliefs in conflict with the dogma of the Roman Catholic Church	(Old Testament) the son of Abraham who was cast out after the birth of Isaac; considered the forebear of 12 Arabian tribes
	a person who is rejected (from society or home)