Asubstances particles are in constant, random motion. the energy of this motion is.

This energy would be connected to the movement of the particles (not any other of their characteristics). We call this energy "kinetic" energy; generally the word "kinetic" means movement .

If you want to differentiate it from the energy coming from the movement of objects, you can say: molecular kinetic energy

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If your choices are: -cropping  -anti-aliasing-imperfection-contrastdownsampling is done to decrease the bit rate when transmitting over a limited bandwidth or to convert to a more limited audio format. this is the opposite of upsampling. so the answer is contrast.