tycoon vs mogul

tycoon and mogul both are nouns.

Word	Noun	Adjective	Verb	Adverb
tycoon	Yes	No	No	No
mogul	Yes	No	No	No

As nouns, tycoon and mogul are synonyms defined as:

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

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