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The 35 pages that link to Sound wave, each with the reason it gives.

• Electromagnetic radiationCompared with: Unlike sound, electromagnetic radiation can travel through vacuum without a material medium.

• Shock waveCompared with: Unlike a shock, an ordinary acoustic wave has gradual, small changes in pressure.

• PhononCompared with: A classical sound wave is a macroscopic description; phonons are quantized lattice excitations.

• Incompressible flowCompared with: Acoustic waves rely on compressibility, unlike the usual incompressible-flow approximation.

• Radio frequencyCompared with: Acoustic waves require a material medium, unlike electromagnetic RF waves.

• P wavesCompared with: Sound waves share P waves' compressional motion, but are not specifically seismic.

• Blast waveCompared with: Ordinary acoustic waves are weak and nearly linear, unlike a strong blast’s shock front.

• Radio waveCompared with: Unlike sound, radio waves are electromagnetic and can travel through vacuum.

• Transverse waveCompared with: Ordinary sound in fluids is longitudinal, unlike a transverse wave.

• Internal waveCompared with: Internal waves are restored mainly by buoyancy, not compressibility.