hornpipe vs United Kingdom of Great Britain and Northern Ireland

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

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

hornpipe (noun)	United Kingdom of Great Britain and Northern Ireland (noun)
a British solo dance performed by sailors	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
an ancient (now obsolete) single-reed woodwind; usually made of bone
music for dancing the hornpipe