The Netherlands vs Common Market

The Netherlands and Common Market both are nouns.

Word	Noun	Adjective	Verb	Adverb
The Netherlands	Yes	No	No	No
Common Market	Yes	No	No	No

The Netherlands (noun)	Common Market (noun)
a constitutional monarchy in western Europe on the North Sea; half the country lies below sea level	an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members