show business vs industry

show business and industry both are nouns.

Word	Noun	Adjective	Verb	Adverb
show business	Yes	No	No	No
industry	Yes	No	No	No

As nouns, industry is a hypernym of show business; that is, industry is a word with a broader meaning than show business:

show business: those involved in providing entertainment: radio and television and films and theater
industry: the people or companies engaged in a particular kind of commercial enterprise

show business (noun)	industry (noun)
those involved in providing entertainment: radio and television and films and theater	the organized action of making of goods and services for sale
	persevering determination to perform a task
	the people or companies engaged in a particular kind of commercial enterprise