Meuse River vs battle of St Mihiel

Meuse River and battle of St Mihiel both are nouns.

Word	Noun	Adjective	Verb	Adverb
Meuse River	Yes	No	No	No
battle of St Mihiel	Yes	No	No	No

Meuse River (noun)	battle of St Mihiel (noun)
an American operation in World War I (1918); American troops under Pershing drove back the German armies which were saved only by the armistice on November 11	a battle in the Meuse-Argonne operation in World War I (1918); the battle in which American troops launched their first offensive in France
a European river; flows into the North Sea