pitched battle vs Chalons

pitched battle and Chalons both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitched battle	Yes	No	No	No
Chalons	Yes	No	No	No

pitched battle (noun)	Chalons (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