United Kingdom vs potted

United Kingdom is a noun but potted is not a noun.

Word	Noun	Adjective	Verb	Adverb
United Kingdom	Yes	No	No	No
potted	No	Yes	No	No

United Kingdom (noun)	potted (noun)
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

United Kingdom (adjective)	potted (adjective)
	of plants; planted or grown in a pot
	(British informal) summarized or abridged
	preserved in a pot or can or jar