Different parts of the world have different definitions for Vaseline Glass, but in the U.S., the basic definition for Vaseline Glass is that 2% Uranium Dioxide (by weight) has been added to the formula as a coloring agent, thereby giving us that lovely yellow color without UV lighting and also a brilliant green fluorescent glow that collectors (me included) can't get enough of when under blacklight.
Uranium Glass is another name for Vaseline Glass. Therefore, if it does not have Uranium in it, it is not Vaseline Glass.