jobcentre vs UK

jobcentre and UK both are nouns.

Word	Noun	Adjective	Verb	Adverb
jobcentre	Yes	No	No	No
UK	Yes	No	No	No

jobcentre (noun)	UK (noun)
a government office in a town where information about available jobs is displayed and where unemployment benefits are administered	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