Interference: The phenomenon that occurs when two or more waves meet at a point and combine either constructively (amplitude increases) or destructively (amplitude decreases).
Standing Wave: A wave pattern formed by interference of two waves traveling in opposite directions, resulting in points of maximum amplitude (nodes) and points of zero amplitude (antinodes).
Principle of Linear Superposition: The principle stating that if two or more waves occupy the same space at the same time, each wave contributes independently to produce an overall resultant wave.