A dry measuring cup is the individual measuring cups which usually come in a set of 4, i.e. 1/4, 1/2, 3/4, and 1 cup. Glass measuring cups are for liquid.
A cup is a cup, basically. However, the true measure is level with the top of what is called a dry measuring cup. That is why you should overfill this type cup and then run a flat edge across the...