Gouache
A water-based paint made opaque (not transparent) by the addition of white paint.

Graphite
Basically, a pencil.

Hatching
Building up of a tone (a shade of a color) by a series of parallel lines.

Laid paper
A type of paper, typically hand-made, that has a visible grid pattern over the entire sheet. The wire screen on which the paper is made produces the pattern.

Linear perspective
A mathematical technique for making objects on a flat (two-dimensional) surface look like they are getting farther away.

Quill pen
A pen made from the tail or wing feathers of the goose, swan, and crow. The tip of the feather is cut with a penknife to a fine or broad point.

Reed pen
A pen made from hollow-barreled grasses such as bamboo.

Value
The degree of lightness or darkness of a color.

Volume
An object’s bulk or mass.

Wash
An area of diluted or transparent ink, applied with a brush.

Wove paper
A handmade paper made on a woven screen made from wire mesh or fabric. The impression of the woven screen can be seen when light is shined through the paper.