what is the difference between anode and cathode of a dry cell and any electrochemical refining cell?

 

a) in the dry cell - anode is the oxidation electrode where electrons are lost by zn.
 
b)      electrolytic cell                                          voltaic  / galvanic cell.
 
     anode         cathode                                    anode       cathode
    ++                  -                                             -              ++
 oxidation        reduction                                    oxidation      reduction