EC vs global organization

EC and global organization both are nouns.

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

As nouns, global organization is a hypernym of EC; that is, global organization is a word with a broader meaning than EC:

EC: an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members
global organization: an international alliance involving many different countries

EC (noun)	global organization (noun)
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members	an international alliance involving many different countries