Barbary Coast vs geographic area

Barbary Coast and geographic area both are nouns.

Word	Noun	Adjective	Verb	Adverb
Barbary Coast	Yes	No	No	No
geographic area	Yes	No	No	No

Barbary Coast (noun)	geographic area (noun)
the Mediterranean coast of northern Africa that was famous for its Moorish pirates	a demarcated area of the Earth
a part of a city that is notorious for gambling dens and brothels and saloons and riotous night life (especially the waterfront of San Francisco after the gold rush of 1849)
a region of northern Africa on the Mediterranean coast between Egypt and Gibraltar; was used as a base for pirates from the 16th to 19th centuries