business concern vs business organisation

business concern and business organisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
business concern	Yes	No	No	No
business organisation	Yes	No	No	No

As nouns, business concern and business organisation are synonyms defined as:

business concern and business organisation: a commercial or industrial enterprise and the people who constitute it

Other synonyms of business concern include business, business organization, concern.

business concern (noun)	business organisation (noun)
a commercial or industrial enterprise and the people who constitute it	a commercial or industrial enterprise and the people who constitute it