Belleau Wood vs Marne River

Belleau Wood and Marne River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Belleau Wood	Yes	No	No	No
Marne River	Yes	No	No	No

As nouns, Belleau Wood and Marne River are synonyms defined as:

Belleau Wood and Marne River: a World War I battle in northwestern France where the Allies defeated the Germans in 1918

Other synonyms of Belleau Wood include Battle of the Marne, Chateau-Thierry, Second Battle of the Marne.

Belleau Wood (noun)	Marne River (noun)
a World War I battle in northwestern France where the Allies defeated the Germans in 1918	a World War I battle in northwestern France where the Allies defeated the Germans in 1918