Higher National Diploma vs Great Britain

Higher National Diploma and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
Higher National Diploma	Yes	No	No	No
Great Britain	Yes	No	No	No

Higher National Diploma (noun)	Great Britain (noun)
a diploma given for vocational training that prepares the student for a career in a particular area; good students may progress to a course leading to a degree	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