A catalyst can be defined as: Is the catalysis based on own type of natural principle? Catalysts use the same laws of science as anything else, but the catalysts takes these laws to another level, in terms of making the laws work better. For example, if we tried to make a diamond, this will take a lot of time, heat and pressure. If we add a catalyst composed on Ni and water, poof it is done in days. In the end, the Ni and water are still there, humbly, like nothing happened, even though the laws of the science were done in record time with a fraction of the energy. It figuratively opens a short cut to the other side.