ratability vs Great Britain

ratability and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
ratability	Yes	No	No	No
Great Britain	Yes	No	No	No

ratability (noun)	Great Britain (noun)
the quality of being capable of being rated or estimated	an island comprising England and Scotland and Wales
the state of being liable to assessment or taxation	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