Wax typically is described by products that include carnauba wax, a naturally occuring wax extracted from the leaves of a palm species called Copernicia prunifera. It is a natural wax that is then mixed with other ingredients like oils etc to soften up the application process and allow it to be more workable as a protectant layer on vehicle paint. Sealants, on the other hand, refer to manmade products...chemical polymers typically, that are more robust and chemically cross link and then bond to the paint forming a more substantial and longer lasting protectant.
From your screen name it looks like you are in Florida. I am too and have abandoned using natural waxes like carnauba altogether down here. the reason for me is that they simply don't last in this climate. Sealants, for me, are much more durable and coatings (super sealants) last even longer. I am still of the opinion that nothing equals the shine and gloss of carnauba based waxes but I don't like having to apply it every week.