wavelength

The distance between one peak of a wave to the next corresponding peak, or between any two adjacent corresponding points, defined as the speed of a wave divided by its frequency.

(on the same wavelength) In complete accord; in harmony.

The length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next; it is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.

the distance (measured in the direction of propagation) between two points in the same phase in consecutive cycles of a wave

a shared orientation leading to mutual understanding