Grand Duchy of Luxembourg vs European country

Grand Duchy of Luxembourg and European country both are nouns.

Word	Noun	Adjective	Verb	Adverb
Grand Duchy of Luxembourg	Yes	No	No	No
European country	Yes	No	No	No

Grand Duchy of Luxembourg (noun)	European country (noun)
a grand duchy (a constitutional monarchy) landlocked in northwestern Europe between France and Belgium and Germany; an international financial center	any one of the countries occupying the European continent