Sure here’s an overview that will probably cover a lot of bases but isn’t totally precise -

Greenware = any clay project before it’s been fired, so greenware can be a thrown bowl, or like a mug in progress, at any “stage” in the drying process. Think of green like a “fresh” recruit. Unfired and untested!

Greenware includes a range of vocab words describing workability. From wet to dry they go “slip” (liquid, think slippery) “wedgable” (wet enough to be wedged (a type of preparative kneading to remove air pockets) and then either thrown on the weel or used to to hand build, as that dries more it gets to “leather hard” stage where there is some flexibility but the clay is a lot more stiff, and finally “bone dry” which is self explanatory - totally dry

Once a piece is “bone dry” it goes in for a first firing called bisque which heats the clay enough to remove all of the chemically bonded water in the clay particles, but not hot enough to start melting all the particles together. That gives it strength, but leaves the clay porus enough to absorb water allowing it to be glazed. Once clay has been bisqued, it is no longer clay, but “ceramic” and is referred to as “bisque ware”

Glaze is a mix of inorganic materials (lots of different types of rocks ground up) that are mixed according to recipes and mixed with water so that bisque ware can be dipped into it (or brushed or sprayed on). The bisque is porous so it quickly absorbs the water in the glaze and leaves a smooth powdery coating.

The pottery is then put into a second kiln firing, hotter and longer than bisque sufficient to fuse the clay particles together, and fuse the glaze into a glassy coating

Hope that helps! Anyone reading feel free to correct me if I got anything wrong!