rabbi vs spiritual leader

rabbi and spiritual leader both are nouns.

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

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

rabbi: spiritual leader of a Jewish congregation; qualified to expound and apply Jewish law
spiritual leader: a leader in religious or sacred affairs

rabbi (noun)	spiritual leader (noun)
spiritual leader of a Jewish congregation; qualified to expound and apply Jewish law	a leader in religious or sacred affairs