wear away vs damage

wear away is not a noun while damage is a noun.

Word	Noun	Adjective	Verb	Adverb
wear away	No	No	Yes	No
damage	Yes	No	Yes	No

As verbs, damage is a hypernym of wear away; that is, damage is a word with a broader meaning than wear away:

wear away (noun)	damage (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

wear away (verb)	damage (verb)
become ground down or deteriorate	inflict damage upon
diminish, as by friction	suffer or be susceptible to damage
cut away in small pieces