magnate vs man of affairs

magnate and man of affairs both are nouns.

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

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

magnate: 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 magnate include businessman.

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