Great Britain vs redbrick university

Great Britain and redbrick university both are nouns.

Word	Noun	Adjective	Verb	Adverb
Great Britain	Yes	No	No	No
redbrick university	Yes	No	No	No

Great Britain (noun)	redbrick university (noun)
an island comprising England and Scotland and Wales	(British informal) a provincial British university of relatively recent founding; distinguished from Oxford University and Cambridge University
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