canvasser vs United Kingdom of Great Britain and Northern Ireland

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

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

canvasser (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
someone who conducts surveys of public opinion	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
someone who examines votes at an election
a petitioner who solicits contributions or trade or votes
a person who takes or counts votes