guru vs religious leader

guru and religious leader both are nouns.

Word	Noun	Adjective	Verb	Adverb
guru	Yes	No	No	No
religious leader	Yes	No	No	No

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

guru (noun)	religious leader (noun)
a Hindu or Buddhist religious leader and spiritual teacher	leader of a religious order
a recognized leader in some field or of some movement