pitched battle vs Battle of the Catalaunian Plains

pitched battle and Battle of the Catalaunian Plains both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitched battle	Yes	No	No	No
Battle of the Catalaunian Plains	Yes	No	No	No

pitched battle (noun)	Battle of the Catalaunian Plains (noun)
a fierce battle fought in close combat between troops in predetermined positions at a chosen time and place	the battle in which Attila the Hun was defeated by the Romans and Visigoths in 451