field of honor vs field of battle

field of honor and field of battle both are nouns.

Word	Noun	Adjective	Verb	Adverb
field of honor	Yes	No	No	No
field of battle	Yes	No	No	No

As nouns, field of honor and field of battle are synonyms defined as:

field of honor and field of battle: a region where a battle is being (or has been) fought

Other synonyms of field of honor include battlefield, battleground, field.

field of honor (noun)	field of battle (noun)
the scene of a duel	a region where a battle is being (or has been) fought
a region where a battle is being (or has been) fought