What are the names of the electrodes of a bipolar junction transistor?

A bipolar junction transistor (BJT) is constructed with three distinct semiconductor layers, each connected to an external terminal or electrode. These three electrodes are specifically named the emitter, the base, and the collector. In a typical circuit, the base acts as the control mechanism. A small current flowing into the base controls a much larger current flowing between the collector and the emitter. It is important not to confuse these with terms like "gate," "source," and "drain," which apply to Field Effect Transistors (FETs).