Prints created via an etching process which involves the use of acid to etch a design into a copper plate, the resulting tones of the print resemble a wash or watercolour.
 

Etchings, engravings, or drypoints in which dots placed close together, usually by a roulette wheel, create lines which approximate crayon strokes. In vogue in France in the 1700s; chiefly used to reproduce drawings.
 

Prints produced using a technique whereby the surface of a copper plate is etched with a hard steel needle, using no acid.
 

A print taken from an engraved block, plate or other engraved surface.
 

An impression made from an etched plate.
 

A print made from a copper plate whose roughened surface has been scraped or burnished to create the design.
 

Prints taken from an engraved block, plate or other engraved surface where the design has been created using a stippling technique i.e.using dots/flecks in varying density to create the desired effect.
 

Prints produced by an aquatint technique in which the part of the plate to be etched is exposed by dissolving the protective coating.