tycoon vs man of affairs

tycoon and man of affairs both are nouns.

Word	Noun	Adjective	Verb	Adverb
tycoon	Yes	No	No	No
man of affairs	Yes	No	No	No

As nouns, man of affairs is a hypernym of tycoon; that is, man of affairs is a word with a broader meaning than tycoon:

tycoon: a very wealthy or powerful businessman
man of affairs: a person engaged in commercial or industrial business (especially an owner or executive)

Other hypernyms of tycoon include businessman.

tycoon (noun)	man of affairs (noun)
a very wealthy or powerful businessman	a person engaged in commercial or industrial business (especially an owner or executive)