macintosh vs Britain

macintosh and Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
macintosh	Yes	No	No	No
Britain	Yes	No	No	No

macintosh (noun)	Britain (noun)
a waterproof raincoat made of rubberized fabric	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 lightweight waterproof (usually rubberized) fabric