peer vs United Kingdom of Great Britain and Northern Ireland

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

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

peer (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a person who is of equal standing with another in a group	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 nobleman (duke or marquis or earl or viscount or baron) who is a member of the British peerage

peer (verb)	United Kingdom of Great Britain and Northern Ireland (verb)
look searchingly