bagatelle vs Great Britain

bagatelle and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
bagatelle	Yes	No	No	No
Great Britain	Yes	No	No	No

bagatelle (noun)	Great Britain (noun)
a table game in which short cues are used to knock balls into holes that are guarded by wooden pegs; penalties are incurred if the pegs are knocked over	an island comprising England and Scotland and Wales
something of little value or significance	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 light piece of music for piano