What are the names for the electrodes of a diode?

A diode is a two-terminal electronic component that acts as a one-way valve for electrical current. The specific engineering names for these two electrodes are the anode (where conventional current enters) and the cathode (where current exits). While "plus and minus" accurately describe the polarity required to forward-bias a diode, they are generic electrical terms, not the proper names of the physical electrodes themselves. The other options mix up terminals from entirely different components. "Source and drain" are specific to Field Effect Transistors (FETs), while "base" belongs to Bipolar Junction Transistors (BJTs) and "gate" is found on FETs.