business leader vs mogul

business leader and mogul both are nouns.

Word	Noun	Adjective	Verb	Adverb
business leader	Yes	No	No	No
mogul	Yes	No	No	No

As nouns, business leader and mogul are synonyms defined as:

Other synonyms of business leader include baron, big businessman, king, magnate, power, top executive, tycoon.

business leader (noun)	mogul (noun)
a very wealthy or powerful businessman	a very wealthy or powerful businessman
	a bump on a ski slope