pong vs U.K.

pong and U.K. both are nouns.

Word	Noun	Adjective	Verb	Adverb
pong	Yes	No	No	No
U.K.	Yes	No	No	No

pong (noun)	U.K. (noun)
an unpleasant smell	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