guru vs leader

guru and leader both are nouns.

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

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

guru (noun)	leader (noun)
a Hindu or Buddhist religious leader and spiritual teacher	a featured article of merchandise sold at a loss in order to draw customers
a recognized leader in some field or of some movement	a person who rules or guides or inspires others