pitched battle vs Marne River

pitched battle and Marne River both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitched battle	Yes	No	No	No
Marne River	Yes	No	No	No

pitched battle (noun)	Marne River (noun)
a fierce battle fought in close combat between troops in predetermined positions at a chosen time and place	a World War I battle in northwestern France where the Allies defeated the Germans in 1918