CIM vs United Kingdom of Great Britain and Northern Ireland

CIM and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
CIM	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

CIM (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
the United Kingdom's central unit for the tasking and coordination and funding of intelligence and security agencies	a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom