mogul vs top executive

mogul and top executive both are nouns.

Word	Noun	Adjective	Verb	Adverb
mogul	Yes	No	No	No
top executive	Yes	No	No	No

As nouns, mogul and top executive are synonyms defined as:

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

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