world organization vs global organization

world organization and global organization both are nouns.

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

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

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

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

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