Gaul vs geographic region

Gaul and geographic region both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gaul	Yes	No	No	No
geographic region	Yes	No	No	No

Gaul (noun)	geographic region (noun)
an ancient region of western Europe that included what is now northern Italy and France and Belgium and part of Germany and the Netherlands	a demarcated area of the Earth
a Celt of ancient Gaul
a person of French descent