geographic region vs Arcadia Aegypti

geographic region and Arcadia Aegypti both are nouns.

Word	Noun	Adjective	Verb	Adverb
geographic region	Yes	No	No	No
Arcadia Aegypti	Yes	No	No	No

geographic region (noun)	Arcadia Aegypti (noun)
a demarcated area of the Earth	a department of Greece in the central Peloponnese