pitched battle vs Bosworth Field

pitched battle and Bosworth Field both are nouns.

Word	Noun	Adjective	Verb	Adverb
pitched battle	Yes	No	No	No
Bosworth Field	Yes	No	No	No

pitched battle (noun)	Bosworth Field (noun)
a fierce battle fought in close combat between troops in predetermined positions at a chosen time and place	the battle that ended the Wars of the Roses (1485); Richard III was killed and Henry Tudor was crowned as Henry VII