You never know what words you may run across when you dive into the world of antiques and collectibles.  Here are a couple that I have run across over the years:

Greenware—this is any unfired clay body before the piece is Bisque Fired, and it is very fragile.

Cased Glass—this is two or more layers of different colored glass get blown with one layer over the other.  Sometimes glass makers carve images into the glass, revealing the multiple layers and colors of glass in the process.

Mercury Gilding–this is a technique of applying a gilt finish consisting of gold and mercury to decorative objects like a mirror.  Mercury is a metal that is liquid at room temperature. When combined with gold or silver, it becomes viscous, its consistency becoming similar to that of butter. Mercury gilding is the process in which mercury is mixed with gold to make an amalgam that is applied to the surface of an object.  When the object is heated up by fire, the mercury evaporates away and the gold is left behind.  This is a VERY toxic technique and is illegal to do in many countries.

This is just a small sample of what I have heard, what kinds of words have you run across?