What are the two basic types of junction field-effect transistors (JFET)?

Junction Field-Effect Transistors (JFETs) are categorized by the type of semiconductor material used to form their central conductive path, known as the channel. The two basic structural types are N-channel and P-channel. An N-channel JFET uses n-type semiconductor material, relying on electrons as the majority charge carriers. A P-channel JFET uses p-type material, relying on positive "holes" for conduction. While silicon and germanium are the base materials used to fabricate these components, "N-channel" and "P-channel" describe the actual basic transistor types.