religious person vs doer

religious person and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
religious person	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of religious person; that is, doer is a word with a broader meaning than religious person:

Other hypernyms of religious person include actor, worker.

religious person (noun)	doer (noun)
a person who manifests devotion to a deity	a person who acts and gets things done