Arcadia Aegypti vs geographic region

Arcadia Aegypti and geographic region both are nouns.

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

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