caster sugar vs Britain

caster sugar and Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
caster sugar	Yes	No	No	No
Britain	Yes	No	No	No

caster sugar (noun)	Britain (noun)
very finely granulated sugar that was formerly sprinkled from a castor	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