global organization vs world organisation

global organization and world organisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
global organization	Yes	No	No	No
world organisation	Yes	No	No	No

As nouns, global organization and world organisation are synonyms defined as:

global organization and world organisation: an international alliance involving many different countries

Other synonyms of global organization include international organisation, international organization, world organization.

global organization (noun)	world organisation (noun)
an international alliance involving many different countries	an international alliance involving many different countries