Saint John's vs Newfoundland and Labrador

Saint John's and Newfoundland and Labrador both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint John's	Yes	No	No	No
Newfoundland and Labrador	Yes	No	No	No

Saint John's (noun)	Newfoundland and Labrador (noun)
a port and provincial capital of Newfoundland	a Canadian province on the island of Newfoundland and on the mainland along the coast of the Labrador Sea; became Canada's 10th province in 1949
the capital and largest city of Antigua and Barbuda; located on the island of Antigua