operational casualty vs operational damage

operational casualty and operational damage both are nouns.

Word	Noun	Adjective	Verb	Adverb
operational casualty	Yes	No	No	No
operational damage	Yes	No	No	No

As nouns, operational casualty and operational damage are synonyms defined as:

operational casualty and operational damage: loss of military equipment in field operations

operational casualty (noun)	operational damage (noun)
loss of military equipment in field operations	loss of military equipment in field operations