eroding vs wearing away

eroding and wearing away both are nouns.

Word	Noun	Adjective	Verb	Adverb
eroding	Yes	No	No	No
wearing away	Yes	No	No	No

As nouns, eroding and wearing away are synonyms defined as:

eroding and wearing away: (geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively

Other synonyms of eroding include eating away, erosion, wearing.

eroding (noun)	wearing away (noun)
(geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively	(geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively