Transverse wave
A wave with a direction of propagation that is perpendicular to its direction of oscillation
Longitudinal wave
A wave with a direction of propagation that is parallel to its direction of oscillation
Supersonic speed
Any speed that is faster than the speed of sound in the substance of interest
Sonic boom
The sound produced as a result of an object traveling at or above Mach 1
Pitch
An indication of how high or low a sound is, which is primarily determined by the frequency of the sound wave