Great Britain vs training college

Great Britain and training college both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
training college	Yes	No	No	No

Great Britain (noun)	training college (noun)
an island comprising England and Scotland and Wales	a school providing training for a special field or profession
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