Inert anodes are electrodes that do not undergo any chemical reaction during the operation of an electrolytic cell. However, there are several other terms that can be used synonymously with "inert anode". One of these is "non-consumable anode", which refers to an electrode that is not consumed during the electrochemical reaction. "Sacrificial anode" can also be used as a synonym for inert anode, but in this case, the term is used to describe an electrode that is consumed in order to protect another metal from corrosion. Other related terms that can be used include "permanent anode", "maintenance-free anode" and "stable anode". In all cases, the basic concept remains the same - an electrode that does not undergo any chemical change during the operation of an electrochemical cell.