UK vs Open University

UK and Open University both are nouns.

Word	Noun	Adjective	Verb	Adverb
UK	Yes	No	No	No
Open University	Yes	No	No	No

UK (noun)	Open University (noun)
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	a British university that is open to people without formal academic qualifications and where teaching is by correspondence or broadcasting or summer school