Canadian Maritime Provinces vs geographic region

Canadian Maritime Provinces and geographic region both are nouns.

Word	Noun	Adjective	Verb	Adverb
Canadian Maritime Provinces	Yes	No	No	No
geographic region	Yes	No	No	No

Canadian Maritime Provinces (noun)	geographic region (noun)
the collective name for the Canadian provinces of New Brunswick and Nova Scotia and Prince Edward Island	a demarcated area of the Earth