corroding vs erosion

corroding and erosion both are nouns.

Word	Noun	Adjective	Verb	Adverb
corroding	Yes	No	No	No
erosion	Yes	No	No	No

As nouns, corroding and erosion are synonyms defined as:

Other synonyms of corroding include corrosion.

corroding (noun)	erosion (noun)
erosion by chemical action	(geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively
	erosion by chemical action
	a gradual decline of something
	condition in which the earth's surface is worn away by the action of water and wind