geographical region vs Lusitania

geographical region and Lusitania both are nouns.

Word	Noun	Adjective	Verb	Adverb
geographical region	Yes	No	No	No
Lusitania	Yes	No	No	No

geographical region (noun)	Lusitania (noun)
a demarcated area of the Earth	ancient region and Roman province on the Iberian Peninsula; corresponds roughly to modern Portugal and parts of Spain