pitched battle vs battle of the Aisne

pitched battle and battle of the Aisne both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitched battle	Yes	No	No	No
battle of the Aisne	Yes	No	No	No

pitched battle (noun)	battle of the Aisne (noun)
a fierce battle fought in close combat between troops in predetermined positions at a chosen time and place	a battle in World War I (May 1918); the Germans tried to attack before the American numbers were too great to defeat; the tactical success of the Germans proved to be a strategic failure