"lu6etj" wrote
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Please would you mind tell me why "sine wave" it is not a correct use
of "wave" word. The only dictionary I have = "Oxford advanced
english dictionary of current english defines wave as: "move to and
fro, up and down", I believe also in english there are word qualifiers
(sine, traveling, standing, etc) who specify the precise meaning of
them in diverse contexts. Am I wrong about this?.

Sine wave is an ideal wave. The motion to and fro are simmetrical.
In reality no such. The wave source push the medium strongly but it come
back with the lower intensity.
For this reason the wave flow transmits the energy from the source to
distant places.
In fluids take place also the mass flow.
S*