i.e. origin is the "starting point" of a an object. You can set it to put your object anywhere in your world. translate moves the object relative to the origin, so if the origin is at 0,0,0 and you translate by 5,0,0 it will be at position 5,0,0. If you set the origin to 3,1,1 and translate by 5,0,0 it will be at 8,1,1.