business organisation vs business organization

business organisation and business organization both are nouns.

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

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

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

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

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