parliament vs U.K.

parliament and U.K. both are nouns.

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

parliament (noun)	U.K. (noun)
a card game in which you play your sevens and other cards in sequence in the same suit as the sevens; you win if you are the first to use all your cards	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 legislative assembly in certain countries