If mud is dirt mixed with water, what is clay?

http://en.wikipedia.org/wiki/Clay

you almost floated like a butterfly there 8—)

In college I took a clay throwing class. I’ve always been a pretty creative person, so I found myself getting very frustrated when making pots turned out to be tougher than I expected. My professor—a stereotypical flower child—saw me getting upset when a cup I was making turned into a bowl.

“Relax, man,” she told me. “It’s just dirt.”

So there you have it. Clay is dirt.

Clay is

A fine-grained, firm earthy material that is plastic when wet and hardens when heated, consisting primarily of hydrated silicates of aluminum and widely used in making bricks, tiles, and pottery.

Geologically it is a
A sedimentary material with grains smaller than 0.002 millimeters in diameter.

I guess clay would be a type of mud then?

it is a type of mud. i live in tennessee where red clay is just a part of our dirt.

I once got a Caddilac stuck up to the wheel wells in the same red clay mud in Mississippi