damage vs bang up

damage is a noun but bang up is not a noun.

Word	Noun	Adjective	Verb	Adverb
damage	Yes	No	Yes	No
bang up	No	No	Yes	No

As verbs, bang up is a hyponym of damage; that is, bang up is a word with a more specific, narrower meaning than damage:

damage (noun)	bang up (noun)
the act of damaging something or someone
any harm or injury resulting from a violation of a legal right
the occurrence of a change for the worse
loss of military equipment
the amount of money needed to purchase something

damage (verb)	bang up (verb)
inflict damage upon	make pregnant
suffer or be susceptible to damage	damage or destroy as if by violence