Britain vs speech day

Britain and speech day both are nouns.

Word	Noun	Adjective	Verb	Adverb
Britain	Yes	No	No	No
speech day	Yes	No	No	No

Britain (noun)	speech day (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	an annual day in the schools when speeches are made and prizes are distributed