Constructive Interference: The process where two waves with the same frequency and phase combine to produce a wave with a larger amplitude.
Destructive Interference: The process where two waves with the same frequency but opposite phase combine to produce a wave with a smaller amplitude or cancel each other out.
Superposition: The principle that describes how two or more waves can combine to form a new wave, where the displacement of the new wave is the vector sum of the displacements of the original waves.