fire watcher vs Britain

fire watcher and Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire watcher	Yes	No	No	No
Britain	Yes	No	No	No

fire watcher (noun)	Britain (noun)
(during World War II in Britain) someone whose duty was to watch for fires caused by bombs dropped from the air	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