Caledonia vs geographic area

Caledonia and geographic area both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caledonia	Yes	No	No	No
geographic area	Yes	No	No	No

Caledonia (noun)	geographic area (noun)
the geographical area (in Roman times) to the north of the Antonine Wall; now a poetic name for Scotland	a demarcated area of the Earth