MOT test vs Great Britain

MOT test and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
MOT test	Yes	No	No	No
Great Britain	Yes	No	No	No

MOT test (noun)	Great Britain (noun)
a compulsory annual test of older motor vehicles for safety and exhaust fumes	an island comprising England and Scotland and Wales
	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