tea parlour vs Britain

tea parlour and Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
tea parlour	Yes	No	No	No
Britain	Yes	No	No	No

tea parlour (noun)	Britain (noun)
a restaurant where tea and light meals are available	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