cantor vs spiritual leader

cantor and spiritual leader both are nouns.

Word	Noun	Adjective	Verb	Adverb
cantor	Yes	No	No	No
spiritual leader	Yes	No	No	No

As nouns, spiritual leader is a hypernym of cantor; that is, spiritual leader is a word with a broader meaning than cantor:

cantor: the official of a synagogue who conducts the liturgical part of the service and sings or chants the prayers intended to be performed as solos
spiritual leader: a leader in religious or sacred affairs

cantor (noun)	spiritual leader (noun)
the official of a synagogue who conducts the liturgical part of the service and sings or chants the prayers intended to be performed as solos	a leader in religious or sacred affairs
the musical director of a choir