Plate boundaries are always faults, but not all faults are plate boundaries. The movement of the plates relative to each other distorts the crust in the region of the boundaries creating systems of earthquake faults. ... Meanwhile, the fault is held together by the force of friction.
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Answer:
Plate boundaries are always faults, but not all faults are plate boundaries. The movement of the plates relative to each other distorts the crust in the region of the boundaries creating systems of earthquake faults. ... Meanwhile, the fault is held together by the force of friction.