long-dated vs Britain

long-dated is not a noun while Britain is a noun.

Word	Noun	Adjective	Verb	Adverb
long-dated	No	Yes	No	No
Britain	Yes	No	No	No

long-dated (noun)	Britain (noun)
	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

long-dated (adjective)	Britain (adjective)
of a gilt-edged security; having more than 15 years to run before redemption