land agent vs United Kingdom of Great Britain and Northern Ireland

land agent and United Kingdom of Great Britain and Northern Ireland both are nouns.

Word	Noun	Adjective	Verb	Adverb
land agent	Yes	No	No	No
United Kingdom of Great Britain and Northern Ireland	Yes	No	No	No

land agent (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a person who administers a landed estate	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 person who is authorized to act as an agent for the sale of land