industrialist vs businessman

industrialist and businessman both are nouns.

Word	Noun	Adjective	Verb	Adverb
industrialist	Yes	No	No	No
businessman	Yes	No	No	No

As nouns, businessman is a hypernym of industrialist; that is, businessman is a word with a broader meaning than industrialist:

industrialist: someone who manages or has significant financial interest in an industrial enterprise
businessman: a person engaged in commercial or industrial business (especially an owner or executive)

Other hypernyms of industrialist include man of affairs.

industrialist (noun)	businessman (noun)
someone who manages or has significant financial interest in an industrial enterprise	a person engaged in commercial or industrial business (especially an owner or executive)