rusting vs corroding

rusting and corroding both are nouns.

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

As nouns, corroding is a hypernym of rusting; that is, corroding is a word with a broader meaning than rusting:

rusting: the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
corroding: erosion by chemical action

Other hypernyms of rusting include corrosion, erosion, oxidation, oxidisation, oxidization.

rusting (noun)	corroding (noun)
the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water	erosion by chemical action