2 totally different things m8 Gsync and freesync are used in gaming monitors to have an adaptive HZ rate of the panel to match the output frames a second of a graphics card. They do this by lowering the hz of the screen when the PC cannot keep the frame rate high enough so the HZ and the FPS are always equal and syncronised.
TruMotion, Motion Rate, MotionFlow, Clear Action, AquaMotion are all ways made up by TV manufacturers to do the opposite for TV to maintain 120hz instead of lowering the hz displayed they make frames up and merge frames and insert black frames etc.. to maintain the 120hz when they are not getting 120 frames a second which works great in a movie but you dont want your screen making stuff up in a shooting game.