layperson vs lay reader

layperson and lay reader both are nouns.

Word	Noun	Adjective	Verb	Adverb
layperson	Yes	No	No	No
lay reader	Yes	No	No	No

As nouns, lay reader is a hyponym of layperson; that is, lay reader is a word with a more specific, narrower meaning than layperson:

layperson: someone who is not a clergyman or a professional person
lay reader: a layman who is authorized by the bishop to read parts of the service in an Anglican or Episcopal church

layperson (noun)	lay reader (noun)
someone who is not a clergyman or a professional person	a layman who is authorized by the bishop to read parts of the service in an Anglican or Episcopal church