The problem with this question is that there isn’t an easy answer, because toads ARE frogs, or at least they are in the frog family. But toads are not "true frogs".
True frogs are the species of frogs that most people think of as frogs and not toads. True toads are what people think of as toads and not frogs (simple, right?).
Frogs and toads have a lot in common. And some frogs even have the word "toad" in their names.
So there's no wonder people often confuse them!
But frogs and toads do have some major differences.
Frogs have smooth, wet skin that looks slimy. Toads on the other hand, have drier, rough skin that looks really bumpy, like warts.
Frogs are skinnier than toads too. Toads are fatter and rounder, and they have short hind legs. They may hop, but they stay close to the ground.
Frogs have much longer legs and webbed hind feet. Toads don’t need these long jumping legs though, because they walk.
They also don’t need webbed back feet for swimming because they live on land. But, frogs live in water and jump everywhere they go.
One thing they do have in common is; toads lay their eggs in water, because their babies start off as tadpoles, just like frog babies do.
The difference is, that frog eggs are laid in bunches, or clusters, and they have a jelly-like substance around them. Toads lay their eggs in lines, or strands, on leaves of plants that live in the water.
In some parts of the world, especially tropical parts near the equator, frogs and toads look very much alike.
The only way to tell these frogs and toads apart is to look at their teeth and bones because they will be different.
But good luck catching one to get a closer look!