proprietor vs man of affairs

proprietor and man of affairs both are nouns.

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

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

proprietor: (law) someone who owns (is legal possessor of) a business
man of affairs: a person engaged in commercial or industrial business (especially an owner or executive)

Other hypernyms of proprietor include businessman.

proprietor (noun)	man of affairs (noun)
(law) someone who owns (is legal possessor of) a business	a person engaged in commercial or industrial business (especially an owner or executive)