damage vs wear away

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

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

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

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