Oscillation
Frequency
Period
periodic
Angular
Equilibrium
Pendulum
Amplitude
Cycle
Crest
Peak
Trough
transverse
reflection
refraction
diffraction
Interference
Superposition
Incident
Longitudinal
Compression
Rarefaction
Standing wave
Progressive wave
Harmonic
Wavefront
Phase
medium
standing wave
progressive wave
harmonic
fundamental harmonic
woodwind
brass
prism
echo
spectrum
critical angle
TIR
polaroid
Wavelet