#corroding__corrosion__erosion  erosion by chemical action
  supertype:  chemical_process__chemical_change__chemical_action  any process determined by the atomic and molecular composition and structure of the substances involved
  subtype:  pitting__roughnes  the formation of small pits in a surface as a consequence of corrosion
  subtype:  rusting__rust  the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water

No statement uses or specializes corroding; click here to add one.