show biz vs entertainment industry

show biz and entertainment industry both are nouns.

Word	Noun	Adjective	Verb	Adverb
show biz	Yes	No	No	No
entertainment industry	Yes	No	No	No

As nouns, show biz and entertainment industry are synonyms defined as:

show biz and entertainment industry: those involved in providing entertainment: radio and television and films and theater

Other synonyms of show biz include show business.

show biz (noun)	entertainment industry (noun)
those involved in providing entertainment: radio and television and films and theater	those involved in providing entertainment: radio and television and films and theater